Kolovratite Mineral Data

Kolovratite Mineral Data +

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General Kolovratite Information

Chemical Formula:

Hydrous vanadate of Ni and Zn

Composition:

Molecular Weight = 196.67 gm

Vanadium 25.90 % V 46.24 % V₂O₅

Zinc 24.94 % Zn 31.04 % ZnO

Nickel 7.46 % Ni 9.49 % NiO

Hydrogen 1.03 % H 9.16 % H₂O

Oxygen 40.68 % O

______ ______

100.00 % 95.93 % = TOTAL OXIDE

Empirical Formula:

Zn_0.75Ni_0.25(VO₄)·(H₂O)

Environment:

In quartz schists and carbonaceous slates. An inadequately described mineral.

IMA Status:

Valid Species (Pre-IMA) 1922

Locality:

Kara-Chagyr and Uch-Kurgan, Ferghana, Turkestan. Link to MinDat.org Location Data.

Name Origin:

Named for Lev S. Kolovrat-Chervinsky (1884-1921), a Russian physicist.

Kolovratite Image

Images:

Kolovratite

Comments: Aqua-colored botryoidal crust of kolovratite.
Location: Mina Ojuela, Mapimi, Durango, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kolovratite Crystallography

Crystal System:

MonoclinicSpace Group: ?

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

By Intensity(I/I_o): 3.88(1), 5.83(1), 11.6(1),

Physical Properties of Kolovratite

Cleavage:

[???] Indistinct

Color:

Greenish yellow, Yellow.

Diaphaniety:

Transparent

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Botryoidal - "Grape-like" rounded forms (e.g.. malachite).

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Fibrous - Crystals made up of fibers.

Hardness:

2-3 - Gypsum-Calcite

Luster:

Vitreous (Glassy)

Streak:

light yellow

Optical Properties of Kolovratite

Optical Data:

Biaxial (?), b=1.577

Calculated Properties of Kolovratite

Fermion Index

Fermion Index = 0.01191
Boson Index = 0.98809

Photoelectric:

PE_Kolovratite= 20.42 barns/electron
U=PE_Kolovratite x r_electron= . barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kolovratite is Not Radioactive

Kolovratite Classification

Dana Class:

40.5.13.1 (40)Hydrated Phosphates, etc

(40.5)with miscellaneous formulae

(40.5.13)Dana Group

40.5.13.1 Kolovratite HydrousvanadateofNiandZn ? Mono

Strunz Class:

VII/C.07-30 VII - Phosphates, Arsenates and Vanadates

VII/C - Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and Mn, Fe, Cu, Zn, Mg

VII/C.07 - Schubnelite - Warikahnite series

VII/C.07-05 Serrabrancaite! MnPO4·(H2O) C 2/c 2/m

VII/C.07-10 Schubnelite Fe(VO4)(H2O) P1 1

VII/C.07-20 Fervanite Fe4(VO4)4·5(H2O) Unk. Mono

VII/C.07-30 Kolovratite HydrousvanadateofNiandZn ? Mono

VII/C.07-40 Warikahnite Zn3(AsO4)2·2(H2O) P1 1

Other Kolovratite Information

References:

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

See Also:

Links to other databases for Kolovratite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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

Kolovratite

Hydrous vanadate of Ni and Zn
Dana No: 40.5.13.1 Strunz No: VII/C.07-30
Locality:

Notes: