Gorceixite Mineral Data (original) (raw)

General Gorceixite Information

Help on Chemical Formula: Chemical Formula:

BaAl3(PO4)(PO3OH)(OH)6

Help on Composition: Composition:

Molecular Weight = 511.27 gm

Barium 26.86 % Ba 29.99 % BaO

Aluminum 15.83 % Al 29.91 % Al2O3

Phosphorus 12.12 % P 27.76 % P2O5

Hydrogen 1.38 % H 12.33 % H2O

Oxygen 43.81 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

BaAl3(PO4)(PO3OH)(OH)6

Help on Environment: Environment:

Alteration of apatite in fossil bones found in Cretaceous sandstone. The original fine structure of the bone is preserved.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1906

Help on Locality: Locality:

Bauru Basin, southern Brazil. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named after the French mineralogist Claude-Henri Gorceix (1842 - 1919) founder of the Mining School (Escola de Minas) in Ouro Preto.

Help on Name Pronunciation: Name Pronunciation:

Gorceixite + Pronunciation Say GORCEIXITE

Help on Synonym: Synonym:

Fava pebbles

Gorceixite Image

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Gorceixite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:2.44897

Help on Cell Dimensions: Cell Dimensions:

a = 7.0538, c = 17.2746, Z = 3; V = 744.36 Den(Calc)= 3.42

Help on Crystal System: Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.002(1), 5.753(0.8), 3.516(0.7),

Click Here for Large Gorceixite Structure Window Crystal Structure:

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Help on Above

| | Radoslovich E W , Slade P G , Neues Jahrbuch fur Mineralogie, Monatshefte , 1980 (1980) p.157-170, Pseudo-trigonal symmetry and the structure of gorceixite, Locality: Glen Alice area, New South Wales, Australia View Additional jPOWD Structure files for Gorceixite [1] | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Gorceixite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Brown, Gray white, Sky blue, White.

Help on Density: Density:

3.323

Help on Diaphaneity: Diaphaneity:

Transparent to Translucent

Help on Fracture: Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Help on Habit: Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Help on Hardness: Hardness:

6 - Orthoclase

Help on Luster: Luster:

Vitreous - Dull

Help on Streak: Streak:

white

Optical Properties of Gorceixite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.059 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1817,KPDmeas= 0.187,KC= 0.193
Ncalc = 1.64 - 1.66

Help on Optical Data: Optical Data:

Uniaxial (+), w=1.618, e=1.625, bire=0.0070.

Calculated Properties of Gorceixite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.17 gm/cc
note: Specific Gravity of Gorceixite =3.32 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Help on Photoelectric: Photoelectric:

PEGorceixite = 113.92 barns/electron
U=PEGorceixite x rElectron Density= 361.32 barns/cc.

Help on Radioactivity: Radioactivity:

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

Gorceixite Classification

Help on Dana Class: Dana Class:

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

(42.07)where (AB)5 (XO4)3 Zq � x(H2O)

(42.07.03)Crandallite Group

42.07.03.01 Crandallite CaAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m

42.07.03.02 Gorceixite BaAl3(PO4)(PO3OH)(OH)6 R 3m 3 2/m

42.07.03.03 Goyazite SrAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m

42.07.03.04 Lusungite? (Sr,Pb)Fe3(PO4)2(OH)5•(H2O) R 3m 3m

42.07.03.05 Plumbogummite PbAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m

42.07.03.06 Kintoreite PbFe3(PO4)2(OH,H2O)6 R 3m 3 2/m

42.07.03.07 Benauite! HSrFe3(PO4)2(OH)6 R 3m 3 2/m

42.07.03.08 Springcreekite! BaV3(PO4)2(OH,H2O)6 R 3m 3 2/m

Help on Strunz Class: Strunz Class:

08.BL.10 08 - PHOSPHATES, ARSENATES, VANADATES

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

08.BL -With medium-sized and large cations, (OH, etc.):RO4 = 3:1

08.BL.10 Arsenogorceixite! BaAl3AsO3(OH)(AsO4,PO4)(OH,F)6 R 3m 3 2/m

08.BL.10 Arsenocrandallite (Ca,Sr)Al3[(As,P)O4]2(OH)5•(H2O) R 3m 3m

08.BL.10 Ferrazite? (Pb,Ba)3(PO4)2•8(H2O)(?) Tri

08.BL.10 Arsenowaylandite* BiAl3(AsO4)2(OH)6 R 3m 3 2/m

08.BL.10 Benauite! HSrFe3(PO4)2(OH)6 R 3m 3 2/m

08.BL.10 Arsenogoyazite (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5•(H2O) R 3m 3 2/m

08.BL.10 Dussertite BaFe3(AsO4)2(OH)5 R 3m 3m

08.BL.10 Crandallite CaAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m

08.BL.10 Goyazite SrAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m

08.BL.10 Gorceixite BaAl3(PO4)(PO3OH)(OH)6 R 3m 3 2/m

08.BL.10 Kintoreite PbFe3(PO4)2(OH,H2O)6 R 3m 3 2/m

08.BL.10 Lusungite? (Sr,Pb)Fe3(PO4)2(OH)5•(H2O) R 3m 3m

08.BL.10 Philipsbornite PbAl3(AsO4)2(OH)5•(H2O) R 3m-,R 3m Trig

08.BL.10 Plumbogummite PbAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m

08.BL.10 Segnitite PbFe3H(AsO4)2(OH)6 R 3m 3 2/m

08.BL.10 Springcreekite! BaV3(PO4)2(OH,H2O)6 R 3m 3 2/m

Other Gorceixite Information

Help on References: References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin 91:1951) OPTIC PROP.(Dana8)

Help on See Also: See Also:

Links to other databases for Gorceixite :
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

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Print or Cut-and-Paste your Gorceixite Specimen Label here :

Gorceixite

BaAl3(PO4)(PO3OH)(OH)6
Dana No: 42.07.03.02 Strunz No: 08.BL.10
Locality:

Notes: