Quartz Mineral Data

Quartz Mineral Data
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General Quartz Information

Help on Chemical Formula: Chemical Formula: SiO2
Help on Composition: Composition: Molecular Weight = 60.08 gm
   Silicon  46.74 %  Si  100.00 % SiO2
   Oxygen   53.26 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (SiO2)
Help on Environment: Environment: Sedimentary, metamorphic, and igneous rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) Prehistoric
Help on Locality: Locality: Very common mineral found world wide. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the German "quarz", of uncertain origin.
Help on Name Pronunciation: Name Pronunciation: Quartz Say QUARTZ
Help on Synonym: Synonym: Agate - banded variety of chaledony
  Amethyst - purple
  Avanturine - feebly translucent chalcedony
  Carnelian - flesh red chalcedony
  Cat's Eye - chatoyant
  Chalcedony - microcrystalline quartz
  Chert - cryptocrystalline quartz
  Chrysoprase - apple green chalcedony
  Citrine - yellow
  Flint - microcrystalline quartz
  Hornstone - flint
  Jasper - red or brown chalcedony
  Moss Agate - variety of chaledony
  Plasma - green chalcedony
  Prase - leek green chalcedony
  Rock Crystal
  Rose Quartz - rose colored
  Sapphire Quartz - blue colored
  Smoky Quartz - brown to black
  Tiger Eye - pseudomorph of asbestos
 

Quartz Image

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Quartz   Calcite

Comments: Purple-colored druse of amethystine quartz and white calcite.
Location: Rio Grande do Sul, Brazil. Scale: Sample size 20 cm.
© Dave Barthelmy
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Quartz   Chalcopyrite

Comments: Well-formed crystals of chalcopyrite and quartz.
Location: Boldut mine, 61 level (350 meters deep), Cavnic, Maramures, Rumania. Scale: 5.5 x 3.5 cm.
© Fabre Minerals
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Quartz   Ilvaite

Comments: Black, prismatic ilvaite with quartz.
Location: First Sovietskij mine, Dalnjegorsk, Russia. Scale: 3.5 x 4.5 cm.
© Fabre Minerals
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Quartz

Comments: Crystal druse of transparent quartz crystals.
Location: Hot Springs, Arkansas, USA. Scale: Specimen size 6 cm.
© Dave Barthelmy
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Quartz   Apatite-(CaF)

Comments: Purple crystal of fluorapatite on slightly smoky quartz crystals. Former Dr. E.E. David and Houston Museum collections.
Location: Pech, Kunar Province, Nuristan, Afghanistan. Scale: Crystal size 3.0 x 2.1 x 1.7 cm.
© Ed Rosenzweig
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Quartz   Epistilbite

Comments: White epistilbite cluster 25 mm across on amethyst quartz crystal matrix.
Location: Sawda, Jalgaon, Maharashtra, India. Scale: 10x8x5 cm.
© John Betts - Fine Minerals
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Quartz

Comments: Slightly smokey quartz overgrown with rose quartz. Note the exceptional transparency of the rose quartz.
Location: Lavra da Ilha, Taquaral, Minas Gerais, Brazil. Scale: 10 cm by 5.2 cm.
© Kevin Ward

Quartz Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.10013
Help on Cell Dimensions: Cell Dimensions: a = 4.9133, c = 5.4053, Z = 3; V = 113.00 Den(Calc)= 2.65
Help on Crystal System: Crystal System: Trigonal - TrapezohedralH-M Symbol (3 2) Space Group: P 3121,P 3221
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.342(1), 4.257(0.22), 1.8179(0.14),
Help on Forms: Forms:

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Forms: ( 2 1 1) ( 1 0 1) ( 6 1 1) ( 1 0 0) ( 0 1 1)

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Levien L , Prewitt C T , Weidner D J , American Mineralogist , 65 (1980) p.920-930, Structure and elastic properties of quartz at pressure, P = 1 atm

View Additional jPOWD Structure files for Quartz
[1] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [2] [20] [21] [22] [23] [24] [25] [26] [3] [4] [5] [6] [7] [8] [9]
 

Physical Properties of Quartz

Help on Cleavage: Cleavage: {0110} Indistinct
Help on Color: Color: Brown, Colorless, Violet, Gray, Yellow.
Help on Density: Density: 2.6 - 2.65, Average = 2.62
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces.
Help on Hardness: Hardness: 7 - Quartz
Help on Luminescence: Luminescence: Fluorescent and Triboluminescent, Short UV=yellow-orange, Long UV=yellow-orange.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Quartz

Help on Dichroism (e): Dichroism (e): none.
Help on Dichroism (w): Dichroism (w): none.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.005 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.207,KPDmeas= 0.209,KC= 0.208
Ncalc = 1.54 - 1.55
Help on Optical Data: Optical Data: Uniaxial (+), w=1.543-1.545, e=1.552-1.554, bire=0.0090.
 

Calculated Properties of Quartz

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.65 gm/cc
note: Specific Gravity of Quartz =2.65 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEQuartz = 1.80 barns/electron
U=PEQuartz x rElectron Density= 4.76 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Quartz is Not Radioactive
 

Quartz Classification
Help on Dana Class: Dana Class: 75.01.03.01 (75)Tectosilicate Si Tetrahedral Frameworks
  (75.01)SiO2 with [4] coordinated Si
  (75.01.03)Dana Group
 
75.01.03.01 Quartz SiO2 P 3121,P 3221 3 2
Help on Strunz Class: Strunz Class: 04.DA.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DA -With small cations
 
04.DA.05 Quartz SiO2 P 3121,P 3221 3 2
 

Other Quartz Information
Help on References: References: NAME( Sinkankas66) PHYS. PROP.(www.saint-hilaire.ca) OPTIC PROP.(Mason68)
Help on See Also: See Also: Links to other databases for Quartz :
1 - Alkali-Nuts(English)
2 - Am. Min. Crystal Structure Database
3 - Amethyst Galleries' Mineral Gallery
4 - Athena
5 - CalTech Mineral Spectroscopy
6 - Earthprints Interactive Photo Gallary
7 - Franklin Minerals(Dunn)
8 - Franklin Minerals(Palache)
9 - GeoScienceWorld
10 - Glendale Community College
11 - Google Images
12 - Google Scholar
13 - Handbook of Mineralogy (MinSocAm)
14 - Handbook of Mineralogy (UofA)
15 - HyperPhysics
16 - MinDAT
17 - Mineral and Gemstone Kingdom
18 - Mineralienatlas (Deutsch)
19 - Minerals in Thin Section-University of North Carolina
20 - Minerals in Thin Section-University of North Carolina
21 - Minerals in Thin Sections-Humboldt State
22 - NSDL Reciprocal Net (JAVA)
23 - Online Mineral Museum
24 - Philatelic Mineralogy
25 - QUT Mineral Atlas
26 - Ruff.Info
27 - Scandinavian mineral gallery
28 - Tradeshop.com - The Rainbow of Gems
29 - UCLA - Petrography Thin-Sections
30 - University of Texas at Austin
31 - WWW-MINCRYST
32 - YupRocks
33 - theimage

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Ask about Quartz here :
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Quartz Specimen Label here :

Quartz

SiO2
Dana No: 75.01.03.01 Strunz No: 04.DA.05
Locality:

 

Notes: