last modified: Sunday, 30-Jan-2011 19:29:35 CET
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
Crystals - Macroscopic Structure
|
Additions to text, new image (Types of Gwindel)
Corrections to text Additions to text Additions to text
|
2010-01-27 |
Agate
|
Additions to text, new specimen (Sedimentary Rocks)
Corrections and additions to text
|
2010-01-09 |
Agate
|
Additions to text, new specimen (Brazil)
Additions to text (Scepter Quartz) Additions to text
|
2010-01-04 |
Agate
|
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
|
Image replaced by a better one (Introduction)
New specimen (Split Growth)
|
2009-11-08 |
Chemical Properties
|
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
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 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
|
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
|
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 |
Additions and corrections to text.
Corrections. Additions and corrections to text. |
2009-07-28 | Agate |
New specimen (Introduction)
Additions to text, new specimen (Other Growth Forms) |
2009-07-23 |
Crystal Habits
|
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 |
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, |
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
|
Additions to text.
Corrections and additions to text, reordering of topics. New specimens (Amphibole-Group, Chlorite-Group, Chlorite-Group)
|
2009-01-02 |
Amethyst
|
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
|
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
|
New specimens (Phantom Quartz, Scepter Quartz)
New sections, new specimens (Veins and Pockets in Limestones and Dolomites,
|
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
|
Additions to text
Additions to text
|
2008-10-14 |
Pink 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
|
Additions to text.
Additions to text.
|
2008-09-24 |
Agate
|
New specimen (Silicified Wood) |
2008-09-22 |
Crystals - Macroscopic Structure
|
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
|
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
|
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
|
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
|
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
|
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
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 |
New specimen (Coral Agate)
New image and additions to text (Diatomite) |
2008-05-23 | Pink Quartz |
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 |
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 |
New specimen (Rutile)
Additions to Text, Corrections
|
|
2008-01-23 | Occurrence |
New section and specimen (Non-Quartz Environments)
New specimen (Chlorite) New specimen (India)
|
2008-01-21 | Occurrence |
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 |
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 |
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 |
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 |
New Specimen (Phantom Quartz)
Image replaced by better one (s-face) New Specimen (Madagascar) |
2007-11-20 | Occurrence |
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 |
Additions to text (Scepter Quartz)
New Image (Steep Rhombohedra),
|
2007-10-29 | Amethyst |
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 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 |
New Specimen (Switzerland)
New images (Alpine-Type Fissures)
|
2007-09-02 |
Growth Forms
|
New Specimen (Skeleton Quartz)
|
2007-09-01 |
Growth Forms
|
Additions and Corrections (Gwindel)
New Specimen (Switzerland)
|
2007-08-31 |
Growth Forms
|
New Specimen (Scepter Quartz)
|
2007-08-29 |
Growth Forms
|
New Specimen (Skeleton Quartz)
New Specimen (Chlorite)
|
2007-08-28 |
Crystal Forms
|
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
|
New Specimen (U.S.A.)
New Specimen (Trigonal Bypyramid)
|
2007-08-07 |
Amethyst
|
Additions and Corrections (Specific Properties)
New Specimen (Chlorite)
|
2007-08-06 |
Citrine
|
Image replaced by better one (Russia)
|
2007-08-04 |
Inclusions
|
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
|
New Specimens (Phantom, Artichoke)
New Specimen (Chlorite) New Specimen (Norway)
|
2007-07-29 |
Amethyst
|
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
|
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
|
New specimen (Austria, Greece)
New specimen (Skeleton Quartz) New specimen (Greece)
|
2007-06-19 |
Smoky Quartz
|
New specimen (Malawi)
New specimen (Hematite) Image replaced by better one (Hematite) New specimen (Ore Veins)
|
2007-06-18 |
Growth Forms
|
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
|
Pages for Carnelian and Sard merged
Heliotrope subsumed under Jasper
|
2007-06-12 |
Growth Forms
|
New specimen (Growth Inhibition)
New specimen (Vein Quartz) Images replaced by better ones (Italy)
|
2007-06-11 |
Amethyst
|
New specimen (Greece)
New specimen (Authigenic Quartz)
|
2007-06-09 |
Rock Crystal
|
New specimen (Germany)
New specimen (Germany)
|
2007-05-28 |
Flint and Chert
|
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
|
New specimen (Corroded Quartz)
New specimen (Namibia) New specimen (Namibia) New specimen (Namibia) |
2007-05-14 |
Ferruginous 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
|
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
|
New specimen (Spain), small additions to text
New specimen (Artichoke Quartz)
|
2007-05-03 |
Amethyst
|
New image (Occurrence), Corrections
New images (Geodes, |
2007-04-19 |
Growth Forms
|
New specimen (Phantom Quartz)
Additions to text (Alpine-type Fissures)
New specimen (Phantoms, same as |
2007-04-18 |
Agate
|
New specimen (Brazil)
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
|
New specimen (Bent Quartz)
New specimen (Ore Veins)
|
2007-04-08 |
Flint and Chert
|
New images (Baltic Coast)
Additions to text, many new paragraphs,
|
2007-03-22 |
Occurrence
|
Started to rewrite chapter, several new images added New chapter, separated from "Occurrence"
|
2007-03-20 | Smoky Quartz |
Image replaced by better one (China)
Image replaced by better one (Gwindel) New specimen (Switzerland) |
2007-03-19 | Amethyst |
New specimen (Germany)
New specimen (Russia) |
2007-03-18 | Chalcedony |
Corrections, moved parts out to Silica Sinter
New page, several new specimen (California) |
2007-03-17 | Agate |
New specimen (Mexico), corrections
Corrections |
2007-03-16 | Agate | New specimen (Morocco) |
2007-03-15 | Agate |
New specimen (Utah)
Corrections |
2007-03-14 | Chalcedony |
New specimen (Italy)
New section (Tourmaline), new specimen |
2007-03-13 | Crystal Forms |
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 |
New specimen (Chlorite), corrections
New specimen (Greece) |
2007-03-10 | Ferruginous Quartz |
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 |
Many corrections and additions to the text
Several new specimen (Faden Quartz, Candle Quartz) |
2007-03-01 | Agate |
New specimen (Germany)
Many corrections and additions to the text |
2007-02-26 |
Chalcedony
|
New specimen (California)
New specimen (Stolberg Diamonds) |
2007-02-25 | Growth Forms |
New specimen (Phantom Quartz)
New specimen (Brazil), text added |
2007-02-24 | Citrine | New specimen (Congo) |
2007-02-23 | Agate |
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 |
New specimen (Muzo Habit)
New specimen (Faden Quartz) |
2007-02-20 | Crystal Habits |
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 |
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