Tangeite Mineral Data

Advertisment

Updated weekly, for the collector, educator, and researcher since 1996. Extensive Inventory of very Rare Minerals. Visa and Mastercard are Welcome

General Tangeite Information

Chemical Formula:

CaCu(VO4)(OH)

Composition:

Molecular Weight = 235.57 gm

Calcium 17.01 % Ca 23.80 % CaO

Vanadium 21.62 % V 38.60 % V₂O₅

Copper 26.98 % Cu 33.77 % CuO

Hydrogen 0.43 % H 3.82 % H₂O

Oxygen 33.96 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaCu(VO₄)(OH)

Environment:

Secondary mineral in vanadium-bearing sandstone deposits. Forms a series with conichalcite.

IMA Status:

Valid Species (Pre-IMA) 1848

Locality:

Tange Gorge, Fergana Valley, Kyrgystan. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Tangeite

Synonym:

Calciovolborthite

Tangeite Image

Images:

Tangeite

Comments: Green. rosette crystalline-aggregates of tangeite on sandstone matrix.
Location: Thompson, Grand County, Utah, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tangeite Crystallography

Axial Ratios:

a:b:c =0.8045:1:0.6382

Cell Dimensions:

a = 7.45, b = 9.26, c = 5.91, Z = 4; V = 407.71 Den(Calc)= 3.84

Crystal System:

Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 2₁2₁2₁

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

By Intensity(I/I_o): 2.61(1), 2.88(1), 4.15(0.75),

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

Basso R , Palenzona A , Zefiro L , Neues Jahrbuch fur Mineralogie, Monatshefte , 1989 (1989) p.300-308, Crystal structure refinement of a Sr-bearing term related to copper, vanadates and arsenates of adelite and descloizite groups, Locality: Molinello mine, Val Graveglia, Northern Appenines, Eastern Liguria, Italy

Physical Properties of Tangeite

Cleavage:

{???} Perfect

Color:

Yellow, Yellow green, Olive green.

Density:

3.5

Diaphaneity:

Subtranslucent

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

3.5 - Copper Penny

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Pearly

Magnetism:

Nonmagnetic

Optical Properties of Tangeite

Gladstone-Dale:

CI meas= -0.192 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.087 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2734,KPDmeas= 0.3,KC= 0.2516
Ncalc = 1.88 - 1.97

Optical Data:

Biaxial (+), a=2.01, b=2.05, g=2.09, bire=0.0800, 2V(Calc)=88, 2V(Meas)=83.

Calculated Properties of Tangeite

Electron Density:

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

Fermion Index:

Fermion Index = 0.0009339406
Boson Index = 0.9990660594

Photoelectric:

PE_Tangeite= 18.16 barns/electron
U=PE_Tangeite x rElectron Density= 66.89 barns/cc.

Radioactivity:

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

Tangeite Classification

Dana Class:

41.05.01.06 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.05)where (A B)2 (XO4) Zq

(41.05.01)Adelite Group

41.05.01.01 Adelite CaMg(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.02 Conichalcite CaCu(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.03 Austinite CaZn(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.04 Duftite-beta? PbCu(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.05 Gabrielsonite PbFe(AsO4)(OH) P 2₁m mm2

41.05.01.06 Tangeite CaCu(VO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.07 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.08 Cobaltaustinite CaCo(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.09 Arsendescloizite PbZn(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.10 Gottlobite! CaMg(VO4,AsO4)(OH) P 2₁2₁2₁ 2 2 2

Strunz Class:

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

08.B - Phosphates, etc. with Additional Anions, without H2O

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

08.BH.35 Austinite CaZn(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Adelite CaMg(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Arsendescloizite PbZn(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Duftite-alpha PbCu(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Duftite-beta? PbCu(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Cobaltaustinite CaCo(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Conichalcite CaCu(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Gabrielsonite PbFe(AsO4)(OH) P 2₁m mm2

08.BH.35 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Tangeite CaCu(VO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Gottlobite! CaMg(VO4,AsO4)(OH) P 2₁2₁2₁ 2 2 2

Other Tangeite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.80,p185,1995) OPTIC PROP.(Am.Min.,Vol.80,p185,1995)

See Also:

Links to other databases for Tangeite :
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

Search for Tangeite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Tangeite :

Dakota Matrix Minerals Google Search for Tangeite
John Betts Fine Minerals Search for Tangeite
McDougall Minerals Google Search for Tangeite
Rock and Mineral Shows Google Search for Tangeite
Weinrich Minerals, Inc. Google Search for Tangeite

Ask about Tangeite 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 Tangeite Specimen Label here :

Tangeite

CaCu(VO4)(OH)
Dana No: 41.05.01.06 Strunz No: 08.BH.35
Locality:

Notes: