News

  • Additions and Corrections
  • Status of Documents and To-Do List
  • Plans
  • Additions and Corrections
  • Status of Documents and To-Do List
  • Plans
  • This "News" page documents which pages are currently being worked on, what is planned and what has been added recently. Although the pages are online since 2005, the "news" start in 2007.

     

    Additions and Corrections

    The record starts at February 18, 2007.
    The entries in this table do not include corrections of typographical errors or additions to references.

    Date Page Changes
    2011-01-29 Agates

    New sections, with numerous new images

    2010-01-31 Alpine-Type Fissures

    New section, with numerous new images

    2010-01-30 Gwindel

    Pink Quartz

    Crystals - Macroscopic Structure

    Crystal Habits

    Additions to text, new image (Types of Gwindel)

    Corrections to text

    Additions to text

    Additions to text

    2010-01-27 Agate

    Pink Quartz

    Additions to text, new specimen (Sedimentary Rocks)

    Corrections and additions to text

    2010-01-09 Agate

    Growth Forms

    Physical Properties

    Additions to text, new specimen (Brazil)

    Additions to text (Scepter Quartz)

    Additions to text

    2010-01-04 Agate

    Chalcedony

    Growth Forms

    New specimens (Germany, Formation)

    New specimens (Malawi, Morocco)

    New specimen, additions to text (Rainbow or Iris Quartz)

    2009-12-31 Crystal Forms

    Additions to text (Hexagonal Prism - m)

    2009-12-29 Amethyst

    Fixed a locality error (Afghanistan)

    2009-11-09 Blue Quartz

    Growth Forms

    Image replaced by a better one (Introduction)

    New specimen (Split Growth)

    2009-11-08 Chemical Properties

    Chalcedony

    Smoky Quartz

    Occurrence

    Growth Forms
     

    New specimen (Silicon)

    New specimen (France)

    Image replaced by a better one (Norway)

    New specimens (Vein Quartz, Vein Quartz)

    Additions, corrections, new specimens (Honeycomb Quartz, Growth Inhibition, Split Growth, Scepter quartz)

    2009-10-19 Growth Forms
     

    Additions, corrections, new specimens (Honeycomb Quartz, Skeleton Quartz)

    2009-10-15 Agate

    Amethyst

    Growth Forms
     

    Occurrence
     

    Quartz as a Rock-Forming Mineral

    New specimens (Germany, Hungary)

    New specimen (Hungary)

    Additions, corrections, new specimen (Honeycomb Quartz)

    Additions to text, new specimens (Geodes and Cavities in Volcanic Rocks)

    Additions to text, new specimens (Igneous Rocks)

    2009-09-21 Occurrence
     

    Growth Forms
     

    Quartz as a Rock-Forming Mineral

    New specimen (Veins and Pockets in Limestones, Marls and Dolomites)

    New section, new specimen (Star Quartz or Quartz Stars)

    New specimens (Igneous Rocks)

    2009-09-20 Occurrence
     

    Quartz as a Rock-Forming Mineral
     

    Ferruginous Quartz

    Amethyst

    Additions to text, several new specimen (Geodes and Cavities in Volcanic Rocks)

    Additions to text, several new specimen (Igneous Rocks, Metamorphic Rocks)

    New specimen (Spain)

    New specimen (U.S.A.)

    2009-09-07 Occurrence
     
     

    Quartz as a Rock-Forming Mineral
     

    Growth Forms
     

    The Silica Group

    Smoky Quartz

    Additions to text, several new specimen (Vein Quartz, Gangue Quartz, Miarole Pockets, Geodes and Cavities in Volcanic Rocks)

    Additions to text, several new specimen (Igneous Rocks, Metamorphic Rocks, Sedimentary Rocks)

    Additions to text, several new specimen (Growth Inhibition, Other, Other, Other)

    New specimen (Cristobalite)

    New specimen (Switzerland)

    2009-08-21 The Silica Group

    Occurrence

    Gwindel

    Additions and corrections to text.

    Corrections.

    Additions and corrections to text.

    2009-07-28 Agate

    Growth Forms

    New specimen (Introduction)

    Additions to text, new specimen (Other Growth Forms)

    2009-07-23 Crystal Habits

    Growth Forms

    Inclusions

    Additions, new specimen (Introduction)

    New specimen (same as in Crystal Habits, Chlorite Group)

    Additions, new specimens (Chlorite Group, Chlorite Group, same as in Crystal Habits)

    2009-07-22 Inclusions

    Additions and corrections (Iron Oxides and Hydroxides)

    2009-07-20 Inclusions

    Additions and corrections, new specimen (Pocket Clay and Sand)

    2009-07-19 Links

    I removed the page with URLs to other web sites ("link list"). Links are now only included on individual pages when their content is related to the topic of the respective pages.

    2009-04-15 Occurrence

    New specimens (Concretions in Sedimentary Rocks, Veins and Pockets in Limestones, Marls and Dolomites)

    2009-04-13 Occurrence

    New specimens and new section (Concretions and Nodules in Sedimentary Rocks)

    2009-04-11 Growth Forms

    New specimen and new section (Other Growth Forms)

    2009-03-07 Quartz Crystals - Twinning

    Corrections and additions to text, new figure.

    2009-03-03 Citrine

    Corrections and additions to text.

    2009-03-02 Growth Forms

    Partially rewritten and rearranged, moved Needle Quartz description to Crystal Habits, Artichoke and Sprouting Quartz subsumed under Split Growth.

    2009-02-06 Inclusions

    Chalcedony

    Jasper

    Occurrence

    Growth Forms

    Rose Quartz

    Ouachita Mountains

    Quartz as a Rock-Forming Mineral

    Additions to text, new specimen (Chlorite Group).

    New specimen (U.S.A.).

    New specimen (Banded Jasper).

    New specimen (Pegmatites and Pegmatite Pockets).

    New specimen (Corroded Quartz).

    Additions to text

    Corrections

    Additions to text, new images,
    new specimen (Igneous Rocks).

    2009-01-12 Ouachita Mountains

    New chapter, new specimen, report on Arkansas quartz deposits.

    2009-01-11 Blue Quartz

    Additions to text

    2009-01-10 Rose Quartz

    Additions to text

    2009-01-05 Crystal Habits

    Corrections and additions (Cumberlandt Habit)

    2009-01-04 Growth Forms

    New specimens (Skeleton Quartz, Skeleton Quartz, Gitter Quartz)

    2009-01-03 Rose Quartz

    Inclusions

    Additions to text.

    Corrections and additions to text, reordering of topics. New specimens (Amphibole-Group, Chlorite-Group, Chlorite-Group)

    2009-01-02 Amethyst

    Prase

    Inclusions

    Crystal Habits

    Growth Forms

    New specimen (Namibia)

    New specimen (Russia)

    New specimen (Chlorite)

    Corrections, new specimen (Pseudocubic Habit)

    Additions to text, several new specimens (Artichoke, Perimorph, Pseudomorph, Pseudomorph, Pseudomorph)

    2008-12-31 Amethyst

    Aventurine

    Flint

    Occurrence

    Smoky Quartz

    Corrections, new specimen (Specific Properties)

    New specimen (Norway)

    New specimen (Germany)

    New specimen (Authigenic Quartz)

    New specimen (Germany)

    2008-11-09 Occurrence

    Additions to text, new specimen, new image (Veins and Pockets in Limestones and Dolomites)
    Images sorted and cleaned up

    2008-11-05 Growth Forms

    Occurrence

    New specimens (Phantom Quartz, Scepter Quartz)

    New sections, new specimens (Veins and Pockets in Limestones and Dolomites,
    Skarn Zones)

    2008-10-27 Inclusions

    New specimen (Chlorite, Hematite)

    2008-10-26 Physical Properties

    Additions to text (Mechanical Properties)

    2008-10-23 Occurrence

    Additions to text (Vein Quartz, Pegmatites and Pegmatite Pockets)

    2008-10-21 Flint and Chert

    Corrections and additions to text

    2008-10-19 Agate

    Additions to text

    2008-10-18 Agate

    Prasiolite

    Additions to text

    Additions to text

    2008-10-14 Pink Quartz

    Rose Quartz

    Corrections and additions to text

    Corrections and additions to text

    2008-10-13 Growth Forms

    New specimen (Artichoke Quartz)
    Image replaced by better one (Artichoke Quartz)
    Additions to text.

    2008-10-08 Chalcedony

    New specimen (Brazil)

    2008-10-06 Inclusions

    Quartz as a Rock-Forming Mineral

    New specimen (Hematite)

    New specimens (Diatomaceous Earth, Diatomite)

    2008-10-03 Citrine

    Prasiolite

    Additions to text.

    Additions to text.

    2008-09-24 Agate

    New specimen (Silicified Wood)
    2008-09-22 Crystals - Macroscopic Structure

    The Silica Group

    Types of Quartz

    Agate

    Amethyst

    Additions and corrections to text.

    Additions to text.

    Additions to text.

    Additions to text.

    Additions and corrections to text.

    2008-08-21 Crystals - Macroscopic Structure

    Additions and corrections to text.

    2008-08-19 Rose Quartz

    Pink Quartz

    Additions to text.

    Small additions to text.

    2008-08-11 Types of Quartz

    Additions to text (Cryptocrystalline Quartz), new figure.
    2008-08-08 Formation and Growth

    I found some bad errors in the section on Cryptocrystalline Quartz. The section has been taken out temporarily, because it needs to be rewritten.
    2008-08-07 Twinning

    Crystal Habits

    The Silica Group

    Types of Quartz

    Small additions to text (Dauphiné twins).

    Small additions to text.

    Additions to text (opal, moganite).

    Additions to text (Cryptocrystalline Quartz), new figure.

    2008-07-30 Rose Quartz

    Chemical Properties

    The Silica Group

    Small additions to text.

    Small additions to text.

    Small additions to text (melanophlogite).

    2008-07-26 Agate

    Additions to text, replaced some images by betrer versions, new specimen (Australia, Germany).
    2008-07-22 Occurrence

    Quartz as a Rock-Forming Mineral

    Agate

    New specimen (Authigenic Quartz)

    New specimen (Sedimentary Rocks)

    Additions to text, new images, new specimen (Germany).

    2008-07-13 Quartz as a Rock-Forming Mineral

    Corrections to text, new figure (Non-Quartz Environments)
    2008-07-01 Agate

    Additions and corrections to text
    2008-06-16 Macroscopic Structure

    Agate

    Additions and corrections to text

    Information on onyx and sardonyx has been subsumed under Agate

    2008-06-14 Quartz as a Rock-Forming Mineral

    Additions and corrections, the section on chert, radiolarites, diatomites, and novaculites has been moved here from the chapter Flint

    2008-06-09 Appendix - Ternary Diagrams

    Appendix - The QAPF Diagram

    Quartz as a Rock-Forming Mineral

    New appendix with introduction to ternary diagrams.

    New appendix for the QAPF diagram.

    Section on quartz as a rock-forming mineral was extended and moved from Occurrence to its own page.

    2008-06-01 Twinning

    New specimen (Japan Law Twins)

    2008-05-26 Agate

    Occurrence

    New specimen (Coral Agate)

    New image and additions to text (Diatomite)

    2008-05-23 Pink Quartz

    The Silica Group

    Flint and Chert

    Additions and corrections to text.

    New specimen and text (Lechatelierite)

    New images and additions to text (Alibates Flint Quarries)

    2008-04-05 All pages Sorry for not working on the pages for so long, but right now I'm very busy with other things. Until I find more time again, there will be only minor corrections in the text.
    2008-01-30 Growth Forms New specimen (Artichoke and Candle Quartz)
    2008-01-29

    All pages
     

    Occurrence
     

    Moved the "Last modified:" timestamp from the bottom of the pages to the top.

    Additions to Text, Corrections (Pegmatites and Pegmatite Pockets)

    2008-01-27

    Inclusions

    Occurrence
     

    New specimen (Rutile)

    Additions to Text, Corrections
    New specimen (Igneous Rocks, Sedimentary Rocks, Metamorphic Rocks, Vein Quartz, Non-Quartz Environments)

    2008-01-23 Occurrence

    Inclusions

    Chalcedony

    New section and specimen (Non-Quartz Environments)

    New specimen (Chlorite)

    New specimen (India)

    2008-01-21 Occurrence

    Twinning

    Gwindel

    Synonyms

    Rock Crystal

    New specimen (Pegmatite Pockets)

    New specimen (Japan Law Twins)

    New specimen (Gwindel)

    Added Greek translations (thanks to Anastasios Tsinidis)

    Corrected the location data of two specimen that were thought to be from Arkansas and Nepal, but turned out to be both from India.

    2008-01-20 Gwindel

    Section about gwindel on Growth Forms was moved to its own page. The Growth Forms page has grown too large (more than 100KByte).
    Additional figures and text, corrections.

    2008-01-06 Smoky Quartz

    Growth Forms,
    Marcoscopic Structure

    New specimen (Smoky Quartz)

    New specimen (Skeleton Quartz, Skeleton Quartz)

    2008-01-03 Growth Forms New specimen (Growth Inhibition, Corroded Quartz)
    2008-01-02 Occurrence

    Occurrence

    Inclusions

    Growth Forms

    Additions to text (Ore Veins and Gangue Quartz)

    New specimen (Geodes in Volcanic Rocks)

    New specimen (Hematite)

    New specimen (Candle Quartz)

    2007-12-30 Occurrence

    The Silica Group

    Additions, New Specimen (Ore Veins and Gangue Quartz)

    New Sections, new specimen (Cristobalite, Melanophlogite, Tridymite)

    2007-11-28 The Silica Group New Specimen (Opal)
    2007-11-26 Growth Forms

    Crystal Forms

    Amethyst

    The Silica Group

    New Specimen (Phantom Quartz)

    Image replaced by better one (s-face)

    New Specimen (Madagascar)

    New Specimen (Opal, Opal)

    2007-11-20 Occurrence

    Inclusions

    New Specimen (Pegmatite Pockets)

    New Specimen (Pocket Clay and Sand)

    2007-11-19 Growth Forms New Specimen (Gwindel)

    2007-11-17 Twinning New figures (Dauphiné twins, Brazil twins)

    2007-11-15 The Silica Group Additions to text, new figure

    2007-11-13 Macroscopic Structure Additions to text, new specimen (Lamellar Structure)

    2007-11-12 Silica Sinter Additions to text, moved section on myrickite from Chalcedony to Silica Sinter

    2007-11-04 Growth Forms New Specimen (Gwindel)

    New Specimen (Phantom Quartz)

    New Image (Faden Quartz)

    2007-11-02 Growth Forms New Specimen (Gwindel)

    2007-11-01 Growth Forms

    Crystal Forms

    Additions to text (Scepter Quartz)

    New Image (Steep Rhombohedra),
    Image replaced by better one (Steep Rhombohedra)

    2007-10-29 Amethyst

    Growth Forms

    The Silica Group

    Twinning

    Macroscopic Structure

    Additions to text (Mexico)

    New Specimen (Faden Quartz)

    Many additions to text, new figures

    Corrections to text

    New chapter about quartz crystal's macroscopic structure, new images

    2007-10-13 The Silica Group
     

    Crystal Forms

    Ametrine

    All pages

    Additions to text (Low Quartz, High Quartz),
    corrections and additions in tables

    New section (Basal Pinacoid)

    Corrections

    Corrections in CSS Stylesheets

    2007-10-06 The Silica Group

    All pages

    All pages

    Reorganization of tables

    Minor corrections and additions to text.

    CSS Stylesheets refurbished for all pages, links for navigating within individual pages got transferred into a vertical navigation bar.

    Until I find a satisfactory solution, the look of the website now depends on the type of browser you use. The users of browsers that are not standard compliant (Internet Explorer family) will not see a navigation bar to the right side. In general, in a standard compliant browser like Firefox, the pages will look more slick. I'm tired of trying to subdue the erratic behavior of a browser that has intentionally been programmed to break standards.

    Nevertheless, the full page content is still accessible to users of Microsoft browsers.

    2007-09-19 Rock Crystal

    Occurrence

    New Specimen (Switzerland)

    New images (Alpine-Type Fissures)

    2007-09-02 Growth Forms

    New Specimen (Skeleton Quartz)

    2007-09-01 Growth Forms

    Rock Crystal

    Additions and Corrections (Gwindel)

    New Specimen (Switzerland)

    2007-08-31 Growth Forms

    New Specimen (Scepter Quartz)

    2007-08-29 Growth Forms

    Inclusions

    New Specimen (Skeleton Quartz)

    New Specimen (Chlorite)

    2007-08-28 Crystal Forms

    Crystal Habits

    New Specimen (Trapezohedron - x)

    New Specimen (Binntal Habit)

    2007-08-27 Growth Forms

    New Specimen (Inhibition)

    2007-08-13 Inclusions

    New Specimen (Anatase)

    2007-08-11 Rock Crystal

    Crystal Forms

    New Specimen (U.S.A.)

    New Specimen (Trigonal Bypyramid)

    2007-08-07 Amethyst

    Inclusions

    Additions and Corrections (Specific Properties)

    New Specimen (Chlorite)

    2007-08-06 Citrine

    Image replaced by better one (Russia)

    2007-08-04 Inclusions

    Growth Forms

    Image replaced by better one (Rutile)

    Images replaced by better ones (Artichoke Quartz, Skeleton Quartz, Needle Quartz)

    2007-08-01 Handedness

    Removed entire chapter. Handedness is such an essential property of quartz that it cannot be presented separately without a lot of redundancy in text and figures.

    2007-07-30 Growth Forms

    Inclusions

    Smoky Quartz

    New Specimens (Phantom, Artichoke)

    New Specimen (Chlorite)

    New Specimen (Norway)

    2007-07-29 Amethyst

    Smoky Quartz

    Occurrence

    New Specimen (Namibia)

    New Specimen (Namibia)

    New Image, Several New Specimen (Pegmatites, Miaroles)

    2007-07-15 Citrine

    Image replaced by better one (Russia)

    2007-07-14 Crystal Forms

    Growth Forms

    Occurrence

    The Silica Group

    Inclusions

    New section and new specimen (Other Forms)

    New specimen (Scepter Quartz)

    Additions to text, new specimen (Pegmatite Pockets)

    New section and new specimen (Opal)

    New specimen (Brookite)

    2007-06-24 Growth Forms

    New specimen (Needle Quartz)

    2007-06-22 Amethyst

    Growth Forms

    Prase

    New specimen (Austria, Greece)

    New specimen (Skeleton Quartz)

    New specimen (Greece)

    2007-06-19 Smoky Quartz

    Inclusions

    Inclusions

    Occurrence

    New specimen (Malawi)

    New specimen (Hematite)

    Image replaced by better one (Hematite)

    New specimen (Ore Veins)

    2007-06-18 Growth Forms
     

    Amethyst

    Jasper

    New specimen (Perimorph),
    image replaced by better one (Cactus Quartz)

    Image replaced by better one (South Africa)

    Image replaced by better one (Heliotrope)

    2007-06-16 Carnelian and Sard

    Jasper

    Pages for Carnelian and Sard merged

    Heliotrope subsumed under Jasper

    2007-06-12 Growth Forms

    Occurrence

    Prase

    New specimen (Growth Inhibition)

    New specimen (Vein Quartz)

    Images replaced by better ones (Italy)

    2007-06-11 Amethyst

    Occurrence

    New specimen (Greece)

    New specimen (Authigenic Quartz)

    2007-06-09 Rock Crystal

    Ferruginous Quartz

    New specimen (Germany)

    New specimen (Germany)

    2007-05-28 Flint and Chert

    Jasper

    New specimen (U.S.A.)

    New specimen (Poppy Jasper)

    2007-05-25 Prase

    New specimen (Greece)

    2007-05-21 Index of Specimen and Locations

    New page to list specimen by location

    2007-05-19 Occurrence

    New specimen (Pegmatite Pockets, Authigenic Quartz)

    2007-05-17 Crystal Habits

    New specimen (Cumberland Habit)

    2007-05-15 Growth Forms

    Citrine

    Ferruginous Quartz

    Smoky Quartz

    New specimen (Corroded Quartz)

    New specimen (Namibia)

    New specimen (Namibia)

    New specimen (Namibia)

    2007-05-14 Ferruginous Quartz

    Smoky Quartz

    New specimen (Germany)

    New specimen (Switzerland)

    2007-05-13 Occurrence

    New images (Pegmatite Pockets, Vein Quartz,
    Alpine-type Fissures),
    corrections, additions to text
    2007-05-12 Types of Quartz

    Chalcedony

    Additions to text

    Additions to text (Specific Properties)

    2007-05-10 Twinning

    New specimen (Dauphiné twins)

    2007-05-09 Amethyst

    New specimen (Namibia)

    2007-05-07 Blue Quartz

    Growth Forms

    New specimen (Spain), small additions to text

    New specimen (Artichoke Quartz)

    2007-05-03 Amethyst

    Occurrence

    New image (Occurrence), Corrections

    New images (Geodes,
    Quartz as a Rock-Forming Mineral)

    2007-04-19 Growth Forms

    Occurrence

    Smoky Quartz

    New specimen (Phantom Quartz)

    Additions to text (Alpine-type Fissures)

    New specimen (Phantoms, same as
    the one added to Growth Forms)

    2007-04-18 Agate

    Chalcedony

    Ferruginous Quartz

    Milky Quartz

    Occurrence

    New specimen (Brazil)

    New specimen (Arizona, Italy)

    Image replaced by better one (Germany)

    New specimen (Portugal), added scales

    New specimen (Pegmatite Pockets, Authigenic Quartz)

    2007-04-15 Occurrence

    New images (Alpine-type Clefts)

    2007-04-09 Growth Forms

    Occurrence

    New specimen (Bent Quartz)

    New specimen (Ore Veins)

    2007-04-08 Flint and Chert

    Occurrence

    New images (Baltic Coast)

    Additions to text, many new paragraphs,
    several new images added

    2007-03-22 Occurrence
     

    Origin of Quartz

    Started to rewrite chapter,
    several new images added

    New chapter, separated from "Occurrence"

    2007-03-20 Smoky Quartz

    Growth Forms

    Twinning

    Image replaced by better one (China)

    Image replaced by better one (Gwindel)

    New specimen (Switzerland)

    2007-03-19 Amethyst

    Citrine

    New specimen (Germany)

    New specimen (Russia)

    2007-03-18 Chalcedony

    Silica Sinter

    Corrections, moved parts out to Silica Sinter

    New page, several new specimen (California)

    2007-03-17 Agate

    Rock Crystal

    New specimen (Mexico), corrections

    Corrections

    2007-03-16 Agate New specimen (Morocco)
    2007-03-15 Agate

    Crystal Forms

    New specimen (Utah)

    Corrections

    2007-03-14 Chalcedony

    Inclusions

    New specimen (Italy)

    New section (Tourmaline), new specimen

    2007-03-13 Crystal Forms

    Rock Crystal

    New specimen, text added (x-faces)

    New specimen (Arkansas)

    2007-03-12 Ferruginous Quartz New specimen (Spain)
    Several images replaced by better ones
    2007-03-11 Inclusions

    Prase

    New specimen (Chlorite), corrections

    New specimen (Greece)

    2007-03-10 Ferruginous Quartz

    Flint

    Several new specimen (Spain)

    New specimen (Denmark), corrections

    2007-03-09 Milky Quartz New specimen (Germany)
    2007-03-08 All Pages Adaptations for Internet Exploder 7
    This malware is still not standard compliant >:-(
    2007-03-02 Formation and Growth

    Growth Forms

    Many corrections and additions to the text

    Several new specimen (Faden Quartz, Candle Quartz)

    2007-03-01 Agate

    Types of Quartz

    New specimen (Germany)

    Many corrections and additions to the text

    2007-02-26 Chalcedony

    "Diamonds"

    New specimen (California)

    New specimen (Stolberg Diamonds)

    2007-02-25 Growth Forms

    Prasiolite

    New specimen (Phantom Quartz)

    New specimen (Brazil), text added

    2007-02-24 Citrine New specimen (Congo)
    2007-02-23 Agate

    Blue Quartz

    Crystal Forms

    Growth Forms

    Smoky Quartz

    New specimen (Namibia)

    Several new specimen (Brazil), text added

    New specimen (Muzo Habit)

    New specimen (Faden Quartz)

    New specimen (Namibia)

    2007-02-22 Crystal Habits

    Growth Forms

    New specimen (Muzo Habit)

    New specimen (Faden Quartz)

    2007-02-20 Crystal Habits

    Twinning

    New section, several new specimen (Muzo Habit)

    New specimen (Brazil Twins)

    2007-02-19 Blue Quartz New specimen (Brazil), text added, corrections
    2007-02-18 Growth Forms New specimen (Phantom Quartz)


     

    Status of Documents and To-Do List

    Note: "Complete" does not mean that there will be no additions or changes to that page. "Complete" means the page has an internally consistent structure. All pages are subject to change.

    Page Status
    Introduction Complete
    Mineralogical Data of Quartz Consistent
    Minor Additions needed
    Types of Quartz Construction Site
    Needs a major overhaul
    Formation and Growth Incomplete
    Usable, but needs to take into account many things that have yet to be explained on Types of Quartz
    Occurrence Construction Site
    Just started. The paragraph on alpine-type clefts will be turned into a chapter of its own in the future.
    Origin of Quartz Construction Site
    The sections on quartz petrology and differentiation need to be written. This page is far from complete.
    The Silica Group Construction Site
    Very incomplete.
    Images and unit cell data of various silica polymorphs need to be added.
    Chemical Properties Complete
    Additions expected in future
    Physical Properties Almost complete
    Usable, but gaps at section on piezoelectricity.
    Behavior of quartz in polarization microscope will be added in the future
    Structure Part on Molecular Structure almost complete
    Molecular models of twin domain borders missing
    Probably will be split up into a Molecular Structure and a Crystal Structure part that will cover things like lamellar and macromosaic crystal structures.
    Quartz Crystals - Introduction Complete
    Quartz Crystals - Basic Terms Complete, but will be rewritten
    Quartz Crystals - Forms Almost complete and usable
    Needs a few more images and some additions to the text
    Quartz Crystals - Habits Usable, but incomplete
    Example images missing
    Quartz Crystals - Twinning Usable, but incomplete
    Schematic figures needed
    Images missing
    Quartz Crystals - Macroscopic Structure Construction site
    Quartz Crystals - Data and Rendering Complete
    Inclusions Construction Site
    Development is essentially stalled because other things are more important.
    Gwindel Usable
    Needs more references
    "Diamonds" Complete
    Some images have to be replaced by better ones
    Ouachita Mountains, Arkansas Construction Site
    New
    Herkimer Usable
    Image annotation and scales incomplete. Text on crystal formation incomplete.
    Overview of Quartz Varieties Complete
    Might be rewritten
    Amethyst Complete
    Ametrine Usable
    Explanation on occurrence missing
    Aventurine Usable
    Explanation on occurrence missing
    Blue Quartz Complete
    Citrine Complete
    Ferruginous Quartz Complete
    More specimen will be added in time
    Tiger's, Cat's, Hawk's Eyes Usable, but inconsistent
    Milky Quartz Usable, incomplete
    Text on occurrence incomplete, images missing
    Pink Quartz Complete
    Prase Complete
    Prasiolite Complete
    Rock Crystal Complete
    Several images have to be replaced
    A more thorough coverage of the historic role of rock crystal would be nice
    Rose Quartz Complete
    Smoky Quartz Complete
    Several images have to be replaced
    Agate Construction Site
    An introduction to different agate types is badly needed
    Specimen missing
    Annotations and scales missing
    Carnelian and Sard Incomplete
    Chalcedony Incomplete
    Chrysoprase Complete
    Flint and Chert Labeled "Complete", but needs a more thorough discussion on chert and flint genesis and occurrence.
    Jasper Incomplete
    Needs a more thorough discussion of its structural properties, genesis, and occurrence.
    Needs more images
    Plasma Incomplete
    Will be subsumed under either Jasper or Chalcedony - yes, I know this is a contradiction. But there simply is no consistent classification scheme for quartz varieties.
    Silica Sinter Construction Site
    Has been added on March, 18th. Terminology needs to be checked.
    Growth Forms Almost complete
    Images of certain growth forms missing.
    Synonyms Ever Growing



    Source:
    http://www.quartzpage.de/print/news.html

    Home:
    www.quartzpage.de