Koritnigite Mineral Data

Koritnigite Mineral Data +

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General Koritnigite Information

Chemical Formula:

ZnHAsO4·(H2O)

Composition:

Molecular Weight = 223.33 gm

Zinc 29.28 % Zn 36.44 % ZnO

Arsenic 33.55 % As 51.46 % As₂O₅

Hydrogen 1.35 % H 12.10 % H₂O

Oxygen 35.82 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

ZnH(AsO₄)·(H₂O)

IMA Status:

Approved IMA 1979

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 100581

PDF 34-1396

Koritnigite Image

Images:

Koritnigite

Comments: Translucent nearly colorless fragment of koritnigite.
Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Koritnigite Crystallography

Axial Ratios:

a:b:c =0.5021:1:0.4212

Cell Dimensions:

a = 7.948, b = 15.829, c = 6.668, Z = 8; alpha = 90.86°, beta = 96.56°, gamma = 90.05° V = 833.31 Den(Calc)= 3.56

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 7.9(1), 3.16(0.9), 3.83(0.7),

Crystal Structure:

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Keller P , Hess H , Riffel H , Neues Jahrbuch fur Mineralogie, Abhandlungen , 138 (1980) p.316-332, Die kristallstruktur von koritnigit, Zn[H2O|HOAsO3], Locality: Tsumeb, Namibia

Physical Properties of Koritnigite

Cleavage:

[010] Perfect

Color:

Colorless.

Density:

3.54

Diaphaniety:

Transparent

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Koritnigite

Gladstone-Dale:

CI meas= -0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1851,KPDmeas= 0.1862,KC= 0.1821

Optical Data:

Biaxial (+), a=1.632, b=1.652, g=1.693, bire=0.0610, 2V(Calc)=72, 2V(Meas)=70.

Calculated Properties of Koritnigite

Electron Density:

r_electron=3.38 gm/cc
note: r_Koritnigite=3.56 gm/cc.

Fermion Index

Fermion Index = 0.01217
Boson Index = 0.98783

Photoelectric:

PE_Koritnigite= 37.66 barns/electron
U=PE_Koritnigite x r_electron= 127.28 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Koritnigite is Not Radioactive

Koritnigite Classification

Dana Class:

39.1.4.1 (39)Hydrated Acid Phosphates, etc

(39.1)A+ [HXO4] · x(H2O)

(39.1.4)Dana Group

39.1.4.1 Koritnigite ZnHAsO4·(H2O) P1 1

39.1.4.2 Cobaltkoritnigite (Co,Zn)(AsO3OH)·(H2O) P1 1

Strunz Class:

VII/C.06-20 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.06 - Cobaltkoritnigite - Geigerite series

VII/C.06-10 Cobaltkoritnigite (Co,Zn)(AsO3OH)·(H2O) P1 1

VII/C.06-20 Koritnigite ZnHAsO4·(H2O) P1 1

VII/C.06-30 Geminite Cu2As2O7·3(H2O) P1 or P1 Tri

VII/C.06-32 Pushcharovskite! Cu(AsO3OH)·1.5(H2O) P1 or P1 Tri

VII/C.06-35 Yvonite! Cu(AsO3OH)·2(H2O) P1 1

VII/C.06-37 Rollandite! Cu3(AsO4)2·4(H2O) P nma 2/m 2/m 2/m

VII/C.06-40 Chudobaite (Mg,Zn)5(AsO3OH)2(AsO4)2·10(H2O) P1 1

VII/C.06-50 Lindackerite CuCu4(AsO4)2(AsO3OH)2·~9(H2O) P1 1

VII/C.06-60 Geigerite Mn5(AsO3OH)2(AsO4)2·10(H2O) P1 1

Other Koritnigite Information

References:

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

See Also:

Links to other databases for Koritnigite :
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 - WWW-MINCRYST 13 -École des Mines de Paris

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

Koritnigite

ZnHAsO4·(H2O)
Dana No: 39.1.4.1 Strunz No: VII/C.06-20
Locality:

Notes: