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Cyanotrichite Mineral Data

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General Cyanotrichite Information

Help on Chemical  Formula: Chemical Formula: Cu4Al2(SO4)(OH)12•2(H2O)
Help on Composition: Composition: Molecular Weight = 644.33 gm
   Aluminum   8.38 %  Al   15.82 % Al2O3
   Copper    39.45 %  Cu   44.42 % Cu2O
   Hydrogen   2.50 %  H    22.37 % H2O
   Sulfur     4.98 %  S    12.43 % SO3
   Oxygen    44.70 %  O
            ______        ______ 
            100.00 %       95.03 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu4Al2(SO4)(OH)12•2(H2O)
Help on Environment: Environment: Formed by the oxidation of copper ores together with other minerals of oxidation zones.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1839
Help on Locality: Locality: Moldava Noua (Moldawa, �j Moldova), Banat, Romania. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek, kyaneos, "blue" and triches, "hair," hence, blue hair.
Help on Name Pronunciation: Name Pronunciation: Cyanotrichite + Pronunciation Say CYANOTRICHITE
Help on Synonym: Synonym: Lettsomite
 

Cyanotrichite Image

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  Cyanotrichite

Comments: Blue, hairy crystals of cyanotrichite.
Location: Grandview mine, Grand Canyon, Coconino County, Arizona, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Cyanotrichite   Azurite

Comments: Blue, hairy crystals of cyanotrichite with dark-blue, blocky azurite on a green, malachite matrix.
Location: Maid of Sunshine Mine, Cochise County, Arizona, USA. Scale: See Image.
© Jeff Weissman / Photographic Guide to Mineral Species

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  Cyanotrichite

Comments: Blue, acicular sprays of cyanotrichite on a gray matrix.
Location: Maid of Sunshine Mine, Cochise County, Arizona, USA. Scale: See Image.
© Jeff Weissman / Photographic Guide to Mineral Species

Cyanotrichite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8057:1:0.2299
Help on Cell Dimensions: Cell Dimensions: a = 10.16, b = 12.61, c = 2.9, Z = 1; V = 371.54 Den(Calc)= 2.88
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.2(1), 3.88(0.9), 5.26(0.8),5.47(0.5), 2.03(0.4), 2.39(0.4), 3.04(0.4), 3.38(0.4),
 

Physical Properties of Cyanotrichite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Sky blue, Light blue, Dark blue.
Help on Density: Density: 2.74 - 2.95, Average = 2.84
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Silky
Help on Streak: Streak: pale blue
 

Optical Properties of Cyanotrichite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.072 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.083 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2153,KPDmeas= 0.2179,KC= 0.2347
Ncalc = 1.64 - 1.69
Help on Optical Data: Optical Data: Biaxial (+), a=1.588, b=1.617, g=1.655, bire=0.0670, 2V(Calc)=86, 2V(Meas)=82. Dispersion relatively strong.
Help on Pleochroism (x): Pleochroism (x): none.
Help on Pleochroism (y): Pleochroism (y): none.
Help on Pleochroism (z): Pleochroism (z): none.
 

Calculated Properties of Cyanotrichite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.81 gm/cc
note: Specific Gravity of Cyanotrichite =2.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0005915436
Boson Index = 0.9994084564
Help on Photoelectric: Photoelectric: PECyanotrichite = 17.46 barns/electron
U=PECyanotrichite x rElectron Density= 49.02 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cyanotrichite is Not Radioactive
 

Cyanotrichite Classification

Help on  Dana Class: Dana Class: 31.02.01.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.02)where (A+ B++)6 (XO4) Zq�x(H2O)
  (31.02.01)Dana Group
 
31.02.01.01 Cyanotrichite Cu4Al2(SO4)(OH)12•2(H2O) Unk Ortho
Help on  Strunz Class: Strunz Class: 07.DE.10 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DE -With only medium-sized cations; unclassified
 
07.DE.10 Cyanotrichite Cu4Al2(SO4)(OH)12•2(H2O) Unk Ortho
 
07.DE.10 Carbonatecyanotrichite Cu4Al2(CO3,SO4)(OH)12•2(H2O) Unk Ortho
 

Other Cyanotrichite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Cyanotrichite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineral and Gemstone Kingdom
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - YupRocks

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

Cyanotrichite

Cu4Al2(SO4)(OH)12•2(H2O)
Dana No: 31.02.01.01 Strunz No: 07.DE.10
Locality:

 

Notes:

 

 
   
 


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