[How the Club Works] [Memberships - Junior, Deluxe , and Platinum] [FAQ] [Past Minerals] Join the Club - Junior, Deluxe and Platinum Memberships Available High Quality Minerals Sent to Your Home or School Each Month Mineral of the Month Club - An Inexpensive Way to Enjoy Minerals General Cyanotrichite InformationCu4Al2(SO4)(OH)12•2(H2O) |
Molecular Weight = 644.33 gm |
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Aluminum 8.38 % Al 15.82 % Al2O3 |
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Copper 39.45 % Cu 44.42 % Cu2O |
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Hydrogen 2.50 % H 22.37 % H2O |
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Sulfur 4.98 % S 12.43 % SO3 |
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Oxygen 44.70 % O |
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100.00 % 95.03 % = TOTAL OXIDE |
Cu4Al2(SO4)(OH)12•2(H2O) |
Formed by the oxidation of copper ores together with other minerals of oxidation zones. |
Valid Species (Pre-IMA) 1839 |
Moldava Noua (Moldawa, Új Moldova), Banat, Romania. Link to MinDat.org Location Data. |
From the Greek, kyaneos, "blue" and triches, "hair," hence, blue hair. |
Cyanotrichite + Pronunciation |
Lettsomite |
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Cyanotrichite Crystallographya:b:c =0.8057:1:0.2299 |
a = 10.16, b = 12.61, c = 2.9, Z = 1; V = 371.54 Den(Calc)= 2.88 |
OrthorhombicSpace Group: Unk |
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{???} Good |
Sky blue, Light blue, Dark blue. |
2.74 - 2.95, Average = 2.84 |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
Acicular - Occurs as needle-like crystals. |
Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces. |
Spherical - Spherical, rounded aggregates. |
2 - Gypsum |
Non-fluorescent. |
Silky |
pale blue |
| Optical Properties of CyanotrichiteCI 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 Biaxial (+), a=1.588, b=1.617, g=1.655, bire=0.0670, 2V(Calc)=86, 2V(Meas)=82. Dispersion relatively strong. |
none. |
none. |
none. |
| Calculated Properties of CyanotrichiteBulk Density (Electron Density)=2.81 gm/cc |
note: Specific Gravity of Cyanotrichite =2.85 gm/cc. Fermion Index = 0.0005915436 |
Boson Index = 0.9994084564 PECyanotrichite = 17.46 barns/electron |
U=PECyanotrichite x rElectron Density= 49.02 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Cyanotrichite is Not Radioactive | Cyanotrichite Classification31.02.01.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen |
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(31.02)where (A+ B++)6 (XO4) Zq·x(H2O) |
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(31.02.01)Dana Group |
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07.DE.10 07 - SULFATES (SELENATES, TELLURATES) |
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07.D - Sulfates (selenates, etc.) with additional anions, with H2O |
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07.DE -With only medium-sized cations; unclassified |
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| Other Cyanotrichite InformationNAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32) |
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 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - MinMax(Deutsch) 12 - MinMax(English) 13 - Mineral and Gemstone Kingdom 14 - Mineralienatlas (Deutsch) 15 - QUT Mineral Atlas 16 - Ruff.Info 17 - YupRocks Search for Cyanotrichite using: Visit our Advertisers for Cyanotrichite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Cyanotrichite Mineral Data : Ask about Cyanotrichite here : Print or Cut-and-Paste your Cyanotrichite Specimen Label here :
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