Mineralogy Database

Dietzeite Mineral Data

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General Dietzeite Information

Help on Chemical  Formula: Chemical Formula: Ca2(IO3)2(CrO4)
Help on Composition: Composition: Molecular Weight = 545.96 gm
   Calcium   14.68 %  Ca   20.54 % CaO
   Chromium   9.52 %  Cr   18.32 % CrO3
   Iodine    46.49 %  I    61.14 % I2O5
   Oxygen    29.31 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2(IO3)2(CrO4)
Help on Environment: Environment: Nitrate deposits in an arid region.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1894
Help on Locality: Locality: Atacama Desert, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for August Dietze (?-1893?), German chemist who first described this mineral.
Help on Name Pronunciation: Name Pronunciation: Dietzeite + Pronunciation Say DIETZEITE
Help on Synonym: Synonym: ICSD 75923
  PDF 25-132

Dietzeite Image

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Comments: Yellow crystalline coating of dietzeite on matrix.
Location: Iquique, Tarapaca, Chile. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Dietzeite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.3979:1:1.9294
Help on Cell Dimensions: Cell Dimensions: a = 10.118, b = 7.238, c = 13.965, Z = 4; beta = 106.62° V = 979.99 Den(Calc)= 3.70
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 1 1) ( 1 1 3) ( 0 1 0) ( 1 1 0) ( 1 0 0) ( 1 0 2) ( 2 1 0) ( 0 0 1)

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Physical Properties of Dietzeite

Help on Cleavage: Cleavage: {100} Indistinct
Help on Color: Color: Golden yellow.
Help on Density: Density: 3.617
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light yellow

Optical Properties of Dietzeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.04 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.016 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2274,KPDmeas= 0.2326,KC= 0.2237
Ncalc = 1.81 - 1.83
Help on Optical Data: Optical Data: Biaxial (-), a=1.825, b=1.842, g=1.857, bire=0.0320, 2V(Calc)=84, 2V(Meas)=86.

Calculated Properties of Dietzeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.39 gm/cc
note: Specific Gravity of Dietzeite =3.70 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0093865554
Boson Index = 0.9906134446
Help on Photoelectric: Photoelectric: PEDietzeite = 175.19 barns/electron
U=PEDietzeite x rElectron Density= 593.64 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dietzeite is Not Radioactive

Dietzeite Classification

Help on  Dana Class: Dana Class: (23)Compound Iodates
  (23.01)with miscellaneous formulae
  (23.01.01)Dana Group Dietzeite Ca2(IO3)2(CrO4) P 21/c 2/m
Help on  Strunz Class: Strunz Class: 04.KD.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.K - Iodates
  04.KD -Iodates with additional anions, with H2O
04.KD.05 Dietzeite Ca2(IO3)2(CrO4) P 21/c 2/m

Other Dietzeite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Dietzeite :
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

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Dana No: Strunz No: 04.KD.05





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