Chrysocolla Mineral Data + Say CHRYSOCOLLA


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General Chrysocolla Information
Help on Chemical Formula: Chemical Formula: (Cu,Al)2H2Si2O5(OH)4·n(H2O)
Help on Composition: Composition: Molecular Weight = 328.42 gm
   Aluminum   2.05 %  Al    3.88 % Al2O3
   Copper    33.86 %  Cu   42.39 % CuO
   Silicon   17.10 %  Si   36.59 % SiO2
   Hydrogen   1.92 %  H    17.14 % H2O
   Oxygen    45.06 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu1.75Al0.25H1.75(Si2O5)(OH)4·0.25(H2O)
Help on Environment: Environment: Mineral of secondary origin commonly associated with other secondary copper minerals.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 315 BC
Help on Locality: Locality: Nizhne-Tagilsk, Ural Mountains, Russia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek chrysos - "gold" and kolla - "glue" in allusion to the name of the material used to solder gold.
Help on Synonym: Synonym: Bisbeeite
 

Chrysocolla Image

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Chrysocolla

Comments: Botryoidal chrysocolla lining a vug.
Location: Inca del Oro, Copiap?, Chile. Scale: 7.5 x 6 cm.
© Fabre Minerals
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Chrysocolla   Cuprite

Comments: Semi-metallic, dark reddish gray, cuprite crystals on blue chrysocolla.
Location: Mashamba West mine, Shaba, Congo. Scale: 7.5 x 4.7 x 2.3 cm.
© Fabre Minerals
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Chrysocolla   Tenorite

Comments: Lustrous black botryoidal Tenorite mostly covering a sky-blue massive chrysocolla matrix.
Location: 79 mine, Banner district, Pinal Co., Arizona. Scale: 5.5 x 3 cm.
© Dan Weinrich

Chrysocolla Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.6404:1:0.7528
Help on Cell Dimensions: Cell Dimensions: a = 5.7, b = 8.9, c = 6.7, Z = 1; V = 339.89 Den(Calc)= 1.60
Help on Crystal System: Crystal System: OrthorhombicSpace Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.494(1), 2.92(0.8), 8.3(0.6),
 

Physical Properties of Chrysocolla

Help on Cleavage: Cleavage: None
Help on Color: Color: Green, Bluish green, Blue, Blackish blue, Brown.
Help on Density: Density: 1.9 - 2.4, Average = 2.15
Help on Diaphaniety: Diaphaniety: Translucent to opaque
Help on Fracture: Fracture: Brittle - Sectile - Brittle fracture with slightly sectile shavings possible.
Help on Habit: Habit: Botryoidal - "Grape-like" rounded forms (e.g.. malachite).
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite).
Help on Hardness: Hardness: 2.5-3.5 - Finger Nail-Copper Penny
Help on Luminescence: Luminescence: None.
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: light green
 

Optical Properties of Chrysocolla

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): pale blue green.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.19 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.599 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.343,KPDmeas= 0.2553,KC= 0.2145
Help on Optical Data: Optical Data: Uniaxial (+), w=1.46, e=1.57, bire=0.1380-0.1750.
 

Calculated Properties of Chrysocolla

Help on Electron Density: Electron Density:

relectron=2.12 gm/cc
note: rChrysocolla =2.15 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.0082
Boson Index = 0.9918
Help on Photoelectric: Photoelectric:

PEChrysocolla = 15.21 barns/electron
U=PEChrysocolla x relectron= 32.32 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Chrysocolla is Not Radioactive
 

Chrysocolla Classification
Help on Dana Class: Dana Class: 74.3.2.1 (74)Phyllosilicate Modulated Layers
  (74.3)with joined strips
  (74.3.2)Dana Group
 
74.3.2.1 Chrysocolla (Cu,Al)2H2Si2O5(OH)4·n(H2O) Unk Ortho
Help on Strunz Class: Strunz Class: VIII/E.21-20 VIII - Silicates
  VIII/E - Cyklosilicates, six rings [Si6O18]12-
  VIII/E.21 - Dioptase - Chrysocolla series
 
VIII/E.21-10 Dioptase CuSiO2(OH)2 R 3 3
 
VIII/E.21-20 Chrysocolla (Cu,Al)2H2Si2O5(OH)4·n(H2O) Unk Ortho
 

Other Chrysocolla Information
Help on References: References: NAME( Ford32) PHYS. PROP.(Ford32) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Chrysocolla :
1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 - Crocoite.com Mineral Locations 5 - Franklin Minerals(Dunn) 6 - Glendale Community College 7 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (MinSocAm) 10 -Handbook of Mineralogy (UofA) 11 -MinDAT 12 -MinMax(Deutsch) 13 -MinMax(English) 14 -Mineralienatlas (Deutsch) 15 - Minerals of Wisconsin 16 -QUT Mineral Atlas 17 - Scandinavian mineral gallery 18 - Tradeshop.com - The Rainbow of Gems 19 -theimage

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Chrysocolla

(Cu,Al)2H2Si2O5(OH)4·n(H2O)
Dana No: 74.3.2.1 Strunz No: VIII/E.21-20
Locality:

 

Notes:

 
 
   
 
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