Mrazekite Mineral Data

General Mrazekite Information

Chemical Formula:

Bi+++2Cu++3(PO4)2O2(OH)2•2(H2O)

Composition:

Molecular Weight = 900.59 gm

Copper 21.17 % Cu 26.50 % CuO

Bismuth 46.41 % Bi 51.74 % Bi₂O₃

Phosphorus 6.88 % P 15.76 % P₂O₅

Hydrogen 0.67 % H 6.00 % H₂O

Oxygen 24.87 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Bi₂Cu₃(PO₄)₂O₂(OH)₂•2(H₂O)

Environment:

Vesuvianite=grossular skarn invaded by secondary copper, bismuth, and vanadium mineralization.

IMA Status:

Approved IMA 1992

Locality:

Benambra, Victoria, Australia. Link to MinDat.org Location Data.

Name Origin:

Named for Zdenek Mrazek (1952-1984) who discovered the mineral.

Name Pronunciation:

Mrazekite + Pronunciation

Synonym:

ICSD 79140

IMA1990-045

PDF 47-1787

Mrazekite Image

Images:

Mrazekite

Comments: Blue, prismatic crystal of mrÃ¡zekite on matrix.
Location: Arme Hilfe Mine, Ullersreuth, Hirschberg, Vogtland, Saxony, Germany. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Mrazekite Crystallography

Axial Ratios:

a:b:c =1.4323:1:3.3544

Cell Dimensions:

a = 9.057, b = 6.323, c = 21.21, Z = 4; beta = 101.3333° V = 1,190.96 Den(Calc)= 5.02

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/n

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

By Intensity(I/I_o): 3.04(1), 2.924(0.83), 7.625(0.78),

Physical Properties of Mrazekite

Cleavage:

{???} Good

Color:

Blue, Cerulean blue.

Density:

4.9

Diaphaneity:

Transparent to translucent

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Spherical - Spherical, rounded aggregates.

Hardness:

2-3 - Gypsum-Calcite

Luster:

Vitreous (Glassy)

Streak:

blue

Optical Properties of Mrazekite

Gladstone-Dale:

CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.018 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1703,KPDmeas= 0.1745,KC= 0.1735
Ncalc = 1.85 - 1.87

Optical Data:

Biaxial (-), a=1.8, b=1.86-1.87, g=1.9, bire=0.1000

Calculated Properties of Mrazekite

Electron Density:

Bulk Density (Electron Density)=4.36 gm/cc
note: Specific Gravity of Mrazekite =4.90 gm/cc.

Fermion Index:

Fermion Index = 0.0001208559
Boson Index = 0.9998791441

Photoelectric:

PE_Mrazekite= 849.08 barns/electron
U=PE_Mrazekite x rElectron Density=3,705.04 barns/cc.

Radioactivity:

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

Mrazekite Classification

Dana Class:

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

(42.04)where (AB)5 (XO4)2 Zq ï¿½ x(H2O)

(42.04.15)Dana Group

42.04.15.01 Mrazekite Bi2Cu3(PO4)2O2(OH)2•2(H2O) P 2₁/n 2/m

Strunz Class:

08.DJ.40 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DJ -With large and medium-sized cations, (OH, etc.):RO4 = 1:l

08.DJ.40 Mrazekite Bi2Cu3(PO4)2O2(OH)2•2(H2O) P 2₁/n 2/m

Other Mrazekite Information

References:

NAME( Dana8) PHYS. PROP.(Bull.Miner.,Vol.107-111,1984-1988) OPTIC PROP.(Bull.Miner.,Vol.107-111,1984-1988)

See Also:

Links to other databases for Mrazekite :
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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Print or Cut-and-Paste your Mrazekite Specimen Label here :

Mrazekite

Bi+++2Cu++3(PO4)2O2(OH)2•2(H2O)
Dana No: 42.04.15.01 Strunz No: 08.DJ.40
Locality:

Notes:

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