| |
 |
Lapeyreite Mineral Data
|
|
|
General Lapeyreite Information
|
 Chemical Formula: |
Cu3O[AsO3(OH)]2•H2O |
| Composition: |
Molecular Weight = 504.51 gm |
| |
Copper 37.79 % Cu 47.30 % CuO |
| |
Arsenic 29.70 % As 45.56 % As2O5 |
| |
Hydrogen 0.80 % H 7.14 % H2O |
| |
Oxygen 31.71 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Cu3O(AsO3OH)2•(H2O) |
| Environment: |
Related to theoparacelsite |
| IMA Status: |
Proposed IMA 2008 (Dana # Added) |
| Locality: |
Roua, D�me de Barrot, Departement Alpes-Maritimes, France Link to MinDat.org Location Data. |
| Name Origin: |
Commission on New Minerals, Nomenclature and Classification (CNMNC) |
| Synonym: |
IMA2003-023b |
| |
Lapeyreite Crystallography
|
| Axial Ratios: |
a:b:c =6.5249:1:3.131 |
| Cell Dimensions: |
a = 19.158, b = 2.9361, c = 9.193, Z = 2; beta = 103.26° V = 503.32 Den(Calc)= 3.33 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.984(1), 3.173(0.9), 2.484(0.8),2.396(0.4), 5.842(0.4), 2.337(0.35), 4.476(0.35), 7.36(0.3), |
| |
Optical Properties of Lapeyreite
|
| Optical Data: |
NCalc= 1.59 - from Gladstone-Dale relationship (KC = 0.1785) where Ncalc=Dcalc*KC+1
|
| |
Calculated Properties of Lapeyreite
|
| Electron Density: |
Bulk Density (Electron Density)=3.13 gm/cc
note: Specific Gravity of Lapeyreite =3.33 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.0001534208
Boson Index = 0.9998465792 |
| Photoelectric: |
PELapeyreite = 37.42 barns/electron
U=PELapeyreite x rElectron Density= 117.07 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lapeyreite is Not Radioactive |
| |
Lapeyreite Classification
|
| Dana Class: |
41.03.01.03 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
| |
(41.03)where (A B)3 (XO4) Zq |
| |
(41.03.01)Clinoclase Group |
| |
41.03.01.01 Clinoclase Cu3(AsO4)(OH)3 P 21/a 2/m |
| |
41.03.01.02 Gilmarite! Cu3(AsO4)(OH)3 P1 1 |
| |
41.03.01.03 Lapeyreite! Cu3O[AsO3(OH)]2•H2O C 2/m 2/m |
| Strunz Class: |
08.XX.00 08 - PHOSPHATES, ARSENATES, VANADATES |
| |
08.X - Unclassified Strunz PHOSPHATES, ARSENATES, VANADATES |
| |
08.XX -Arsenites, Basic |
| |
08.XX.00 Arsenobismite? Bi2(AsO4)(OH)3 Unk Ortho |
| |
08.XX.00 Coeruleolactite (Ca,Cu)Al6(PO4)4(OH)8•4-5(H2O) P1 1 |
| |
08.XX.00 Cheralite-(Ce)? (Ce,Ca,Th)(P,Si)O4 P 21/n 2/m |
| |
08.XX.00 Chernovite-(Ce)* (Ce,Y)(AsO4) I 41/amd 4/m 2/m 2/m |
| |
08.XX.00 Kerstenite? PbSeO4(?) P nma 2/m 2/m 2/m |
| |
08.XX.00 Laubmannite? Fe3Fe6(PO4)4(OH)12 Unk Ortho |
| |
08.XX.00 Spodiosite? Ca2(PO4)F Pbcm 2/m 2/m 2/m |
| |
08.XX.00 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4•5(H2O)(?) Unk Ortho |
| |
08.XX.00 Viseite Ca10Al24(SiO4)6(PO4)7O22F3•72(H2O)(?) I a3d 4/m 3 2/m |
| |
08.XX.00 Vanuranylite? (H3O,Ba,Ca,K)1.6(UO2)2V2O8•4(H2O)(?) C 2/c ? 2/m |
| |
08.XX.00 Sodium-autunite Na2(UO2)2(PO4)2•8(H2O) P 4/nmm 4/m 2/m 2/m |
| |
08.XX.00 Sodium meta-autunite! Na2(UO2)2(PO4)2•6-8(H2O) P 4/nmm 4/m 2/m 2/m |
| |
08.XX.00 Slavkovite! Cu13(AsO4)6(AsO3OH)4•23(H2O) P1 1 |
| |
08.XX.00 IMA2000-020! Fe4[AsO3OH]5[AsO2(OH)2]2•20(H2O) Ortho Ortho |
| |
08.XX.00 Lewisite! (Ca,Fe,Na)2(Sb,Ti)2O7 F d3m 4/m 3 2/m |
| |
08.XX.00 Kamarizaite! Fe3(AsO4)2(OH)3•3H2O Pccm, Pcc2, Pcmm, Pcm21 Ortho |
| |
08.XX.00 Lapeyreite! Cu3O[AsO3(OH)]2•H2O C 2/m 2/m |
| |
08.XX.00 IMA2008-063 Pb[Zn0.25,[]0.75]Fe3H(AsO4)2(OH)6 C 2/c 2/m |
| |
08.XX.00 IMA2009-002! Cu3(AsO4)2 P 21/c 2/m |
| |
08.XX.00 IMA2009-005 (Y,Ca,REE)5[(Si,P)O4]3F P 63/m 6/m 2/m 2/m |
| |
08.XX.00 IMA2009-016 Cu4H(AsO4)2(OH)3•H2O P1 1 |
| |
Other Lapeyreite Information
|
| See Also: |
Links to other databases for Lapeyreite :
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 Lapeyreite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Lapeyreite :
Ask about Lapeyreite 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 Lapeyreite Specimen Label here :
|
Lapeyreite
Cu3O[AsO3(OH)]2•H2O
Dana No: 41.03.01.03 Strunz No: 08.XX.00
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.