Zincrosasite Mineral Data

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General Zincrosasite Information

Chemical Formula:

(Zn,Cu)2(CO3)(OH)2

Composition:

Molecular Weight = 223.42 gm

Zinc 36.58 % Zn 45.54 % ZnO

Copper 21.33 % Cu 26.70 % CuO

Hydrogen 0.90 % H 8.06 % H₂O

Carbon 5.38 % C 19.70 % CO₂

Oxygen 35.81 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn_1.25Cu_0.75(CO₃)(OH)₂

Environment:

An inadequately described species.

IMA Status:

Valid Species (Pre-IMA) 1959

Locality:

Tsumeb, Namibia. Link to MinDat.org Location Data.

Name Origin:

Named as the zinc rich member of rosasite.

Name Pronunciation:

Zincrosasite + Pronunciation

Zincrosasite Image

Images:

Zincrosasite

Comments: Spherical zincrosasite aggregates on limonite.
Location: Kali Kafi Mine, Anarak District, Great Salt Desert, Esfahan, Iran. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Zincrosasite Crystallography

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/a

Physical Properties of Zincrosasite

Cleavage:

{???} Good, {???} Good

Color:

White, White green, Light green.

Density:

4 - 4.2, Average = 4.09

Diaphaneity:

Transparent to Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Subadamantine

Streak:

white

Optical Properties of Zincrosasite

Gladstone-Dale:

CI meas= -0.1 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2049,KC= 0.1863
Ncalc = 1.75 - 1.78

Optical Data:

Biaxial (?), b=1.84

Calculated Properties of Zincrosasite

Electron Density:

Bulk Density (Electron Density)=3.94 gm/cc
note: Specific Gravity of Zincrosasite =4.10 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Zincrosasite= 27.66 barns/electron
U=PE_Zincrosasite x rElectron Density= 108.89 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zincrosasite is Not Radioactive

Zincrosasite Classification

Dana Class:

16a.03.01.04 (16a)Carbonates - Hydroxyl or Halogen

(16a.03)where (A B)2 (XO3) Zq

(16a.03.01)Rosasite Group

16a.03.01.01 Rosasite (Cu,Zn)2(CO3)(OH)2 P 2₁/a 2/m

16a.03.01.02 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 2₁/a 2/m

16a.03.01.03 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri

16a.03.01.04 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 2₁/a 2/m

16a.03.01.05 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 2₁/a 2/m

Strunz Class:

05.BA.10 05 - CARBONATES (NITRATES)

05.B - Carbonates with additional anions, without H2O

05.BA -With Cu, Co, Ni, Zn, Mg, Mn

05.BA.10 Nullaginite Ni2(CO3)(OH)2 P 2₁/m,P 2₁ Mono

05.BA.10 Georgeite Cu5(CO3)3(OH)4•6(H2O) None

05.BA.10 Malachite Cu2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 2₁/a 2/m

05.BA.10 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri

05.BA.10 Pokrovskite Mg2(CO3)(OH)2•0.5(H2O) P 2₁/a 2/m

05.BA.10 Rosasite (Cu,Zn)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Chukanovite! Fe2(CO3)(OH)2 P 2₁/a 2/m

Other Zincrosasite 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 Zincrosasite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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

Zincrosasite

(Zn,Cu)2(CO3)(OH)2
Dana No: 16a.03.01.04 Strunz No: 05.BA.10
Locality:

Notes: