Carbonate-cyanotrichite Mineral Data

Carbonate-cyanotrichite Mineral Data +

General Carbonate-cyanotrichite Information

Chemical Formula:

Cu++4Al2(CO3,SO4)(OH)12·2(H2O)

Composition:

Molecular Weight = 620.53 gm

Aluminum 8.70 % Al 16.43 % Al₂O₃

Copper 40.96 % Cu 51.28 % CuO

Hydrogen 2.60 % H 23.23 % H₂O

Carbon 1.28 % C 4.68 % CO₂

Sulfur 1.76 % S 4.39 % SO₃

Oxygen 44.71 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu₄Al₂(CO₃)_0.66(SO₄)_0.34(OH)₁₂·2(H₂O)

Environment:

Oxidation weathering product of sulfides.

IMA Status:

Approved IMA 1963

Locality:

Balasauskankyk, in NW Kara-Tau area, Kazakhstan. Link to MinDat.org Location Data.

Name Origin:

Named after the composition and structural similarity to cyanotrichite, Greek for "blue hair".

Carbonate-cyanotrichite Image

Images:

Carbonate-cyanotrichite

Comments: Bright blue micro crystals of carbonate-cyanotrichite on matrix.
Location: Widowmaker mine, Fry Canyon, San Juan Co., Utah, USA. Scale: Crystal size 0.1 mm.
© Tom Loomis / Dakota Matrix

Carbonate-cyanotrichite Crystallography

Crystal System:

OrthorhombicSpace Group: Unk

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.21(1), 10.1(1), 2.01(0.6),3.33(0.6), 5.03(0.6), 2.51(0.5), 2.77(0.5), 5.63(0.5),

Physical Properties of Carbonate-cyanotrichite

Color:

Blue, Greenish blue, Azure blue.

Density:

2.65 - 2.67, Average = 2.66

Diaphaniety:

Transparent to Translucent

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Hardness:

2 - Gypsum

Luster:

Silky

Optical Properties of Carbonate-cyanotrichite

Gladstone-Dale:

CI meas= -0.106 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.241,KC= 0.2178

Optical Data:

Biaxial (+), a=1.616, b=1.63, g=1.677, bire=0.0610, 2V(Calc)=60, 2V(Meas)=55-60. Dispersion strong, r > v.

Pleochroism (x):

colorless.

Pleochroism (z):

bright blue.

Calculated Properties of Carbonate-cyanotrichite

Electron Density:

r_electron=2.62 gm/cc
note: r_{Carbonate-cyanotrichite}=2.66 gm/cc.

Fermion Index

Fermion Index = 0.00049
Boson Index = 0.99951

Photoelectric:

PE_{Carbonate-cyanotrichite}= 17.94 barns/electron
U=PE_{Carbonate-cyanotrichite} x r_electron= 47.09 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Carbonate-cyanotrichite is Not Radioactive

Carbonate-cyanotrichite Classification

Dana Class:

16b.7.7.1 (16b)Carbonates - Hydroxyl or Halogen

(16b.7)Dana Type

(16b.7.7)Dana Group

16b.7.7.1 Carbonate-cyanotrichite Cu4Al2(CO3,SO4)(OH)12·2(H2O) Unk Ortho

Strunz Class:

VI/D.08-30 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.08 - Spangolite - Glaucocerinite series

VI/D.08-05 Bechererite! (Zn,Cu)6Zn2(OH)13[(S,Si)(O,OH)4]2 P 3 3

VI/D.08-10 Spangolite Cu6Al(SO4)(OH)12Cl·3(H2O) P 3₁c 3m

VI/D.08-20 Cyanotrichite Cu4Al2(SO4)(OH)12·2(H2O) Unk Ortho

VI/D.08-30 Carbonate-cyanotrichite Cu4Al2(CO3,SO4)(OH)12·2(H2O) Unk Ortho

VI/D.08-35 Camerolaite Cu4Al2[HSbO4,SO4](OH)10(CO3)·2(H2O) P 2₁ ? 2

VI/D.08-40 Woodwardite Cu4Al2(SO4)(OH)12·2-4(H2O) Unk Hex

VI/D.08-42 Hydrowoodwardite! Cu1-xAlx(OH)2(SO4)x/2·n(H2O)with0<x<0.67andn>3x/2 R 3m 3 2/m

VI/D.08-45 Zincowoodwardite! [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n] P 3- or R 3m 3

VI/D.08-45* Zincowoodwardite-1T! [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)],x=0.33,n.0.96 P 3 3

VI/D.08-45** Zincowoodwardite-3R! [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)],0.32<x<0.50,n=0.59 R 3m 3 2/m

VI/D.08-50 Chalcoalumite CuAl4(SO4)(OH)12·3(H2O) P 2₁ 2

VI/D.08-60 Nickelalumite (Ni,Cu)Al4[(SO4),(NO3)2](OH)12·3(H2O) P 2₁ 2

VI/D.08-70 Mbobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12·3(H2O) P 2₁ 2

VI/D.08-80 Hydrombobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12·14(H2O) Unk Mono

VI/D.08-90 Carrboydite (Ni,Cu)14Al9(SO4,CO3)6(OH)43·7(H2O) Unk Hex

VI/D.08-100 Zincaluminite Zn6Al6(SO4)2(OH)26·5(H2O) Unk Hex

VI/D.08-110 Glaucocerinite (Zn,Cu)5Al3(SO4)1.5(OH)16·9(H2O) Unk (HEX-R) Trig

Other Carbonate-cyanotrichite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Carbonate-cyanotrichite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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Print or Cut-and-Paste your Carbonate-cyanotrichite Specimen Label here :

Carbonate-cyanotrichite

Cu++4Al2(CO3,SO4)(OH)12·2(H2O)
Dana No: 16b.7.7.1 Strunz No: VI/D.08-30
Locality:

Notes: