Kipushite Mineral Data

General Kipushite Information

Chemical Formula:

(Cu,Zn)5Zn(PO4)2(OH)6•(H2O)

Composition:

Molecular Weight = 678.42 gm

Zinc 21.69 % Zn 26.99 % ZnO

Copper 35.13 % Cu 43.97 % CuO

Phosphorus 9.13 % P 20.92 % P₂O₅

Hydrogen 1.04 % H 9.29 % H₂O

Oxygen 33.02 % O

______ ______

100.00 % 101.18 % = TOTAL OXIDE

Empirical Formula:

5(Cu_0.75)5(Zn_0.25)Zn(PO₄)₂(OH)₅•(H₂O)

Environment:

Secondary mineral in the oxidized zone of a Cu–Zn deposit (Kipushi, Congo).

IMA Status:

Approved IMA 1985

Locality:

Kipushi, 28 km southwest of Lubumbashi, Katanga Province, Congo (Shaba Province, Zaire). Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Kipushite + Pronunciation

Synonym:

ICSD 201847

PDF 38-375

Kipushite Image

Images:

Kipushite

Comments: Green microcrystals of kipushite on matrix.
Location: Kipushi, Shaba, Zaire. Scale: 10x8x5 mm.
© Richard Dale / Dale Minerals

Images:

Kipushite

Comments: Prismatic emerald green microcrystals of kipushite on quartz.
Location: Snowshoe Claim, near Battle Mountain, Lander County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kipushite Crystallography

Axial Ratios:

a:b:c =1.3321:1:1.165

Cell Dimensions:

a = 12.197, b = 9.156, c = 10.667, Z = 4; beta = 99.77° V = 1,173.97 Den(Calc)= 3.84

Crystal System:

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

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

By Intensity(I/I_o): 4.03(1), 2.554(0.9), 2.97(0.6),

Crystal Structure:

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Piret P , Deliens M , Piret-Meunier J , The Canadian Mineralogist , 23 (1985) p.35-42, Occurrence and crystal structure of kipushite, a new copper-zinc, phosphate from Kipushi, Zaire, Locality: Kipushi, Zaire

Physical Properties of Kipushite

Cleavage:

None

Color:

Emerald green.

Density:

3.8

Diaphaneity:

Transparent to Translucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Hardness:

4 - Fluorite

Luster:

Vitreous (Glassy)

Streak:

light blue

Optical Properties of Kipushite

Gladstone-Dale:

CI meas= -0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.006 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1885,KPDmeas= 0.1904,KC= 0.1873
Ncalc = 1.71 - 1.72

Optical Data:

Biaxial (-), a=1.693, b=1.738, g=1.74, bire=0.0470

Calculated Properties of Kipushite

Electron Density:

Bulk Density (Electron Density)=3.68 gm/cc
note: Specific Gravity of Kipushite =3.84 gm/cc.

Fermion Index:

Fermion Index = 0.0090516266
Boson Index = 0.9909483734

Photoelectric:

PE_Kipushite= 26.70 barns/electron
U=PE_Kipushite x rElectron Density= 98.32 barns/cc.

Radioactivity:

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

Kipushite Classification

Dana Class:

42.02.04.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.02)where (AB)3 (XO4) Zq · x(H2O)

(42.02.04)Kipushite Group

42.02.04.01 Kipushite (Cu,Zn)5Zn(PO4)2(OH)6•(H2O) P 2₁/c 2/m

42.02.04.02 Philipsburgite (Cu,Zn)6(AsO4,PO4)2(OH)6•(H2O) P 2₁/c 2/m

Strunz Class:

08.DA.35 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DA -With small (and occasionally larger) cations

08.DA.35 Kipushite (Cu,Zn)5Zn(PO4)2(OH)6•(H2O) P 2₁/c 2/m

08.DA.35 Philipsburgite (Cu,Zn)6(AsO4,PO4)2(OH)6•(H2O) P 2₁/c 2/m

Other Kipushite 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 Kipushite :
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 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Ask about Kipushite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Kipushite

(Cu,Zn)5Zn(PO4)2(OH)6•(H2O)
Dana No: 42.02.04.01 Strunz No: 08.DA.35
Locality:

Notes: