Dietzeite Mineral Data

[Newest Minerals] [Minerals for Sale] [Educational Articles] [About Us] [Image Gallery]
John Betts - Fine Minerals
Classic minerals, out-of-print books & magazines, plus informative articles for collectors

General Dietzeite Information

Chemical Formula:

Ca2(IO3)2(CrO4)

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

Empirical Formula:

Ca₂(IO₃)₂(CrO₄)

Environment:

Nitrate deposits in an arid region.

IMA Status:

Valid Species (Pre-IMA) 1894

Locality:

Atacama Desert, Chile. Link to MinDat.org Location Data.

Name Origin:

Named for August Dietze (?-1893?), German chemist who first described this mineral.

Name Pronunciation:

Dietzeite + Pronunciation

Synonym:

ICSD 75923

PDF 25-132

Dietzeite Image

Images:

Dietzeite

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

Dietzeite Crystallography

Axial Ratios:

a:b:c =1.3979:1:1.9294

Cell Dimensions:

a = 10.118, b = 7.238, c = 13.965, Z = 4; beta = 106.62° V = 979.99 Den(Calc)= 3.70

Crystal System:

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

Forms:

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

Warning: this large pop-up is very compute intensive and may not work well with some computers.

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

Burns P C , Hawthorne F C , The Canadian Mineralogist , 31 (1993) p.313-319, The crystal structure of dietzeite, Ca2H20(IO3)2(CrO4), a heteropolyhedral, framework mineral

Physical Properties of Dietzeite

Cleavage:

{100} Indistinct

Color:

Golden yellow.

Density:

3.617

Diaphaneity:

Transparent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

3.5 - Copper Penny

Luster:

Vitreous (Glassy)

Streak:

light yellow

Optical Properties of Dietzeite

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

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

Electron Density:

Bulk Density (Electron Density)=3.39 gm/cc
note: Specific Gravity of Dietzeite =3.70 gm/cc.

Fermion Index:

Fermion Index = 0.0093865554
Boson Index = 0.9906134446

Photoelectric:

PE_Dietzeite= 175.19 barns/electron
U=PE_Dietzeite x rElectron Density= 593.64 barns/cc.

Radioactivity:

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

Dietzeite Classification

Dana Class:

23.01.01.01 (23)Compound Iodates

(23.01)with miscellaneous formulae

(23.01.01)Dana Group

23.01.01.01 Dietzeite Ca2(IO3)2(CrO4) P 2₁/c 2/m

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

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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 - 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 Dietzeite using:

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

Visit our Advertisers for Dietzeite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Diamond Dan Publications

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Dietzeite Mineral Data :

Ask about Dietzeite 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 Dietzeite Specimen Label here :

Dietzeite

Ca2(IO3)2(CrO4)
Dana No: 23.01.01.01 Strunz No: 04.KD.05
Locality:

Notes: