Quartz Mineral Data + Say QUARTZ

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 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   Fluorapatite

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 Diaphaniety: Diaphaniety: 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: Triboluminescent.
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
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:

relectron=2.65 gm/cc
note: rQuartz =2.65 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.02208
Boson Index = 0.97792
Help on Photoelectric: Photoelectric:

PEQuartz = 1.80 barns/electron
U=PEQuartz x relectron= 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: 75.1.3.1 (75)Tectosilicate Si Tetrahedral Frameworks
  (75.1)SiO2 with [4] coordinated Si
  (75.1.3)Dana Group
 
75.1.3.1 Quartz SiO2 P 3121,P 3221 3 2
Help on Strunz Class: Strunz Class: IV/D.01-10 IV - Oxides
  IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds)
  IV/D.01 - Quartz group
 
IV/D.01-10 Quartz SiO2 P 3121,P 3221 3 2
 
IV/D.01-20 Tridymite SiO2 F1 1
 
IV/D.01-30 Cristobalite SiO2 P 41212 4 2 2
 
IV/D.01-35 Moganite! SiO2 I2/a 2/m
 
IV/D.01-40 Melanophlogite SiO2·n(C,H,O,S) P 41/nbc 4/m 2/m 2/m
 
IV/D.01-40* Melanophlogite-beta! SiO2·n(C,H,O,S) P m3n 4/m 3 2/m
 
IV/D.01-50 Coesite SiO2 C 2/c 2/m
 
IV/D.01-60 Stishovite SiO2 P 4/mnm 4/m 2/m 2/m
 
IV/D.01-70 Lechatelierite* SiO2 None
 
IV/D.01-80 Opal SiO2·n(H2O) None
 

Other Quartz Information
Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) 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 - Applied Mineralogy 5 -Athena 6 - CalTech Mineral Spectroscopy 7 - Crocoite.com Mineral Locations 8 -Earthprints Interactive Photo Gallary 9 - Franklin Minerals(Dunn) 10 - Franklin Minerals(Palache) 11 - Glendale Community College 12 -Google Images 13 -Google Scholar 14 -Handbook of Mineralogy (MinSocAm) 15 -Handbook of Mineralogy (UofA) 16 - HyperPhysics 17 -MinDAT 18 -MinMax(Deutsch) 19 -MinMax(English) 20 - Mineral and Gemstone Kingdom 21 -Mineralienatlas (Deutsch) 22 - Minerals in Thin Section-University of North Carolina 23 - Minerals in Thin Section-University of North Carolina 24 -Minerals in Thin Sections-Humboldt State 25 - Minerals of Wisconsin 26 -NSDL Reciprocal Net (JAVA) 27 - Philatelic Mineralogy 28 -QUT Mineral Atlas 29 - Scandinavian mineral gallery 30 - Thin Sections - Brock University 31 - Tradeshop.com - The Rainbow of Gems 32 - UCLA - Petrography Thin-Sections 33 -University of Minnesota 34 -University of Texas at Austin 35 - WWW-MINCRYST 36 - YupRocks 37 -theimage

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Quartz

SiO2
Dana No: 75.1.3.1 Strunz No: IV/D.01-10
Locality:

 

Notes:

 
 
   
 
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