Nevadaite Mineral Data

General Nevadaite Information

Chemical Formula:

(Cu++,[ ],Al,V+++)6[Al8(PO4)8F8] (H2O)23

Composition:

Molecular Weight = 1,758.65 gm

Aluminum 14.04 % Al 26.52 % Al₂O₃

Vanadium 2.84 % V 4.18 % V₂O₃

Zinc 0.07 % Zn 0.09 % ZnO

Copper 7.23 % Cu 9.05 % CuO

Phosphorus 13.91 % P 31.88 % P₂O₅

Hydrogen 2.58 % H 23.01 % H₂O

Oxygen 50.29 % O

Fluorine 9.04 % F 9.04 % F

- % F -3.81 % -O=F₂

______ ______

100.00 % 99.97 % = TOTAL OXIDE

Empirical Formula:

Cu₂Zn_0.02V³⁺_0.98Al_1.15Al₈P_7.9O₃₂F_8.37(OH)_1.63(H₂O)_21.65

Environment:

Secondary mineral found in the upper supergene zone of the Carlin-trend gold belt. New structure type

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

5425-5375 (elevation) benches, Gold Quarry open-pit mine near Carlin, Eureka County, Nevada. Link to MinDat.org Location Data.

Name Origin:

Named for the locality

Synonym:

IMA2002-035

Nevadaite Image

Images:

Nevadaite

Comments: Robin's egg blue radiating acicular sprays of nevadaite to about 0.3 mm.
Location: Gold Quarry mine, Eureka Co., Nevada, USA. Scale: Picture size 2 cm.
© Tom Loomis / Dakota Matrix

Nevadaite Crystallography

Axial Ratios:

a:b:c =0.638:1:0.2611

Cell Dimensions:

a = 12.123, b = 18.999, c = 4.961, Z = 1; V = 1,142.64 Den(Calc)= 2.56

Crystal System:

Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 2₁mn

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

By Intensity(I/I_o): 6.077(1)(200), 5.618(0.9)(130), 9.535(0.8)(020),2.983(0.6)(241), 2.661(0.4)(061), 3.43(0.4)(041), 1.844(0.4)(352),

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

Cooper M A , Hawthorne F C , Roberts A C , Foord E E , Erd R C , Evans H T , Jensen M C , The Canadian Mineralogist , 42 (2004) p.741-752

Physical Properties of Nevadaite

Cleavage:

None

Color:

Pale green, Turquoise.

Density:

2.54

Diaphaneity:

Translucent

Fracture:

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

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Crystalline - Fine - Occurs as well-formed fine sized crystals.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

3 - Calcite

Luster:

Vitreous (Glassy)

Streak:

pale powder blue

Optical Properties of Nevadaite

Gladstone-Dale:

CI meas= 0.034 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.041 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2137,KPDmeas= 0.2154,KC= 0.2229
Ncalc = 1.57

Optical Data:

Biaxial (-), a=1.54, b=1.548, g=1.553, bire=0.0130

Calculated Properties of Nevadaite

Electron Density:

Bulk Density (Electron Density)=2.55 gm/cc
note: Specific Gravity of Nevadaite =2.54 gm/cc.

Fermion Index:

Fermion Index = 0.0003467178
Boson Index = 0.9996532822

Photoelectric:

PE_Nevadaite= 4.78 barns/electron
U=PE_Nevadaite x rElectron Density= 12.16 barns/cc.

Radioactivity:

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

Nevadaite Classification

Dana Class:

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

(42.06)where (AB)2 (XO4) Zq · x(H2O)

(42.06.13)Nevadaite Group

42.06.13.01 Nevadaite! (Cu,[],Al,V)6[Al8(PO4)8F8](H2O)23 P 2₁mn 2 2 2

42.06.13.02 Cloncurryite! [Cu0.56(VO)0.44]Al2(PO4)2(F,OH)•2.5H2O) P 2₁/c 2/m

Strunz Class:

08.DC.60 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1

08.DC.60 Nevadaite! (Cu,[],Al,V)6[Al8(PO4)8F8](H2O)23 P 2₁mn 2 2 2

08.DC.60 Cloncurryite! [Cu0.56(VO)0.44]Al2(PO4)2(F,OH)•2.5H2O) P 2₁/c 2/m

Other Nevadaite Information

References:

NAME( CanMin, v 41 ,p 741) PHYS. PROP.(CanMin, v 41 ,p 741) OPTIC PROP.(CanMin, v 41 ,p 741)

See Also:

Links to other databases for Nevadaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Nevadaite using:

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

Visit our Advertisers for Nevadaite :

A Bijoux Google Search for Nevadaite
Adam's Minerals Google Search for Nevadaite
Cape Minerals Google Search for Nevadaite
Dakota Matrix Minerals Google Search for Nevadaite
Excalibur Mineral Corp. Google Search for Nevadaite
Exceptional Minerals Google Search for Nevadaite
John Betts Fine Minerals Search for Nevadaite
McDougall Minerals Google Search for Nevadaite
Mineral News Website Link
Rock and Mineral Shows Google Search for Nevadaite
Weinrich Minerals, Inc. Google Search for Nevadaite

Ask about Nevadaite 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 Nevadaite Specimen Label here :

Nevadaite

(Cu++,[ ],Al,V+++)6[Al8(PO4)8F8] (H2O)23
Dana No: 42.06.13.01 Strunz No: 08.DC.60
Locality:

Notes: