Mrazekite Mineral Data

[Content and History] [Recent Issues] [Back Issues] [Subscriptions] [Contacts]
See Also: [Diamond Crystals] [Excalibur Minerals] [Hudson Institute] [Minerals on CDROM]
Mineral News was founded some twenty years ago and has developed a following of
avid mineral collectors seeking timely information about new finds and other items
of interest to the collector community. Articles are solicited from collector and scientific authors.

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 mrázekite 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 - PrismaticH-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),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Ridkosil T , Srein V , Fabry J , Hybler J , Maximov B A , The Canadian Mineralogist , 30 (1992) p.215-224, Mrazekite, Bi2Cu3(OH)2O2(PO4)2.2H2O, a new mineral species, and its crystal structure

View Additional jPOWD Structure files for Mrazekite
[1]

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 · 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 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Mrazekite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Mrazekite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Mrazekite Mineral Data :

Ask about Mrazekite 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 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: