Kurumsakite Mineral Data

Kurumsakite Mineral Data +

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General Kurumsakite Information

Chemical Formula:

(Zn,Ni,Cu)8Al8V2Si5O35·27(H2O) (?)

Composition:

Molecular Weight = 2,003.89 gm

Aluminum 10.77 % Al 20.35 % Al₂O₃

Vanadium 5.08 % V 9.08 % V₂O₅

Zinc 9.79 % Zn 12.18 % ZnO

Copper 6.34 % Cu 7.94 % CuO

Silicon 7.01 % Si 14.99 % SiO₂

Nickel 8.79 % Ni 11.18 % NiO

Hydrogen 2.72 % H 24.27 % H₂O

Oxygen 49.50 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn₃Ni₃Cu₂Al₈V⁵⁺₂Si₅O₃₅·27(H₂O)

Environment:

Found in fractures in a bituminous schists.

IMA Status:

Valid Species (Pre-IMA) 1954

Locality:

Kurumsak, near Dzhambul, Karatau Mountanins, Kazakhstan. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

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Kurumsakite Crystallography

Crystal System:

OrthorhombicSpace Group: Unk

Physical Properties of Kurumsakite

Color:

Greenish yellow, Bright yellow.

Density:

4.03

Habit:

Felted - Occurs as minute crystalling aggregates with the form of felt material.

Habit:

Massive - Fibrous - Distinctly fibrous fine-grained forms.

Luster:

Vitreous - Silky

Optical Properties of Kurumsakite

Gladstone-Dale:

CI meas= 0.358 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1535,KC= 0.2391

Optical Data:

Biaxial (+), a=1.616, b=1.617, g=1.622-1.623, bire=0.0060-0.0070, 2V(Calc)=46-50, 2V(Meas)=35.

Calculated Properties of Kurumsakite

Electron Density:

r_electron=4.03 gm/cc
note: r_Kurumsakite=4.03 gm/cc.

Fermion Index

Fermion Index = 0.00864
Boson Index = 0.99136

Photoelectric:

PE_Kurumsakite= 12.36 barns/electron
U=PE_Kurumsakite x r_electron= 49.82 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kurumsakite is Not Radioactive

Kurumsakite Classification

Dana Class:

78.1.6.1 (78)Unclassified silicates

(78.1)possible nesosilicates

(78.1.6)Dana Group

78.1.6.1 Kurumsakite (Zn,Ni,Cu)8Al8V2Si5O35·27(H2O)(?) Unk Ortho

Strunz Class:

VIII/D.09-20 VIII - Silicates

VIII/D - Unclassified silicates, mostly cations of small size Mg, Fe, Mn, Cu

VIII/D.09 - Almbosite - Kurumsakite series

VIII/D.09-10 Almbosite? Fe5Fe4V4Si3O27 Ortho ? Ortho

VIII/D.09-20 Kurumsakite (Zn,Ni,Cu)8Al8V2Si5O35·27(H2O)(?) Unk Ortho

Other Kurumsakite Information

References:

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

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

Kurumsakite

(Zn,Ni,Cu)8Al8V2Si5O35·27(H2O) (?)
Dana No: 78.1.6.1 Strunz No: VIII/D.09-20
Locality:

Notes: