|
|
Redledgeite Mineral Data
|
|
|
General Redledgeite Information
|
Chemical Formula: |
BaTi6Cr+++2O16•(H2O) |
Composition: |
Molecular Weight = 802.60 gm |
|
Barium 17.11 % Ba 19.10 % BaO |
|
Titanium 35.79 % Ti 59.71 % TiO2 |
|
Chromium 12.96 % Cr 18.94 % Cr2O3 |
|
Hydrogen 0.25 % H 2.24 % H2O |
|
Oxygen 33.89 % O |
|
______ ______ |
|
100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
BaTi6Cr2O16•(H2O) |
IMA Status: |
Approved IMA 1961 |
Locality: |
Red Ledge mine, south of Washington, Nevada Co., California. Link to MinDat.org Location Data. |
Name Origin: |
Named after it's locality. |
Name Pronunciation: |
Redledgeite + Pronunciation |
Synonym: |
ICSD 62114 |
|
PDF 39-352 |
|
Redledgeite Image |
Images:
|
|
Redledgeite Crystallography
|
Axial Ratios: |
a:c = 1:0.41152 |
Cell Dimensions: |
a = 14.32, c = 5.893, Z = 4; V = 1,208.43 Den(Calc)= 4.41 |
Crystal System: |
Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 41/a |
X Ray Diffraction: |
By Intensity(I/Io): 3.19(1), 2.22(0.9), 2.46(0.9), |
|
Physical Properties of Redledgeite
|
Cleavage: |
{???} Good |
Color: |
Yellow green, Black. |
Density: |
3.72 |
Diaphaneity: |
Opaque |
Hardness: |
6-7 - Orthoclase-Quartz |
Luster: |
Adamantine |
Streak: |
gray white |
|
Optical Properties of Redledgeite
|
Optical Data: |
NCalc= 2.42 - from Gladstone-Dale relationship (KC = 0.3217) where Ncalc=Dcalc*KC+1 NCalc= 2.2 - from Gladstone-Dale relationship (KC = 0.3217) where Ncalc=Dmeas*KC+1
|
|
Calculated Properties of Redledgeite
|
Electron Density: |
Bulk Density (Electron Density)=4.11 gm/cc note: Specific Gravity of Redledgeite =4.41 gm/cc. |
Fermion Index: |
Fermion Index = 0.08 Boson Index = 0.92 |
Photoelectric: |
PERedledgeite = 82.73 barns/electron U=PERedledgeite x rElectron Density= 340.00 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Redledgeite is Not Radioactive |
|
Redledgeite Classification
|
Dana Class: |
07.09.05.02 (07)Multiple Oxides |
|
(07.09)Dana Type |
|
(07.09.05)Dana Group |
|
07.09.05.01 Mannardite BaTi6V2O16•(H2O) I 41/a 4/m |
|
07.09.05.02 Redledgeite BaTi6Cr2O16•(H2O) I 41/a 4/m |
Strunz Class: |
04.DK.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
|
04.D - Metal:Oxygen = 1:2 and similar |
|
04.DK -With large (� medium-sized) cations; tunnel structures |
|
04.DK.05 Akaganeite Fe(O,OH,Cl) I2/m 2/m |
|
04.DK.05 Ankangite Ba(Ti,V,Cr)8O16 I 4/m 4/m |
|
04.DK.05 Coronadite Pb(Mn,Mn)8O16 I2/m 2/m |
|
04.DK.05 Hollandite Ba(Mn,Mn)8O16 I2/m 2/m |
|
04.DK.05 Manjiroite (Na,K)(Mn,Mn)8O16•n(H2O) I 4/m 4/m |
|
04.DK.05 Mannardite BaTi6V2O16•(H2O) I 41/a 4/m |
|
04.DK.05 Redledgeite BaTi6Cr2O16•(H2O) I 41/a 4/m |
|
04.DK.05 Priderite (K,Ba)(Ti,Fe)8O16 I 4/m 4/m |
|
04.DK.05 Henrymeyerite! BaFeTi7O16 I 4/m 4/m |
|
Other Redledgeite Information
|
References: |
NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Redledgeite :
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 Redledgeite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Redledgeite :
Ask about Redledgeite 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
Espa�ol
Print or Cut-and-Paste your Redledgeite Specimen Label here :
Redledgeite
BaTi6Cr+++2O16•(H2O)
Dana No: 07.09.05.02 Strunz No: 04.DK.05
Locality:
Notes:
|
|
|
|
|
|
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.