Spodiosite Mineral Data

General Spodiosite Information

Chemical Formula:

Ca2(PO4)F

Composition:

Molecular Weight = 194.13 gm

Calcium 41.29 % Ca 57.77 % CaO

Phosphorus 15.96 % P 36.56 % P₂O₅

Oxygen 32.97 % O

Fluorine 9.79 % F 9.79 % F

- % F -4.12 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₂(PO₄)F

Environment:

Spodiosite is a mixture of fluorapatite, calcite and serpentine. See IMA action 2003-03-B

IMA Status:

Discredited IMA 2003 - Valid Mineral (PreIMA) 1872

Locality:

Nyttsta Kran mine, Filipstad, Varmland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named in 1872 from the Greek for "ash gray", in allusion to the color.

Name Pronunciation:

Spodiosite + Pronunciation

Synonym:

Discredited

Spodiosite Crystallography

Axial Ratios:

a:b:c =0.8857:1:1.5489

Cell Dimensions:

a = 6.185, b = 6.983, c = 10.816, Z = 4; V = 467.14 Den(Calc)= 2.76

Crystal System:

Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbcm

Physical Properties of Spodiosite

Cleavage:

{010} Distinct, {001} Indistinct

Color:

Gray, Blue gray, Gray brown.

Density:

2.94

Habit:

Porcelainous - Fine-grained, translucent massive material like broken china

Hardness:

5 - Apatite

Luster:

Earthy (Dull)

Optical Properties of Spodiosite

Gladstone-Dale:

CI meas= -0.197 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.275 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2459,KPDmeas= 0.2308,KC= 0.1928
Ncalc = 1.53 - 1.57

Optical Data:

Biaxial (+), a=1.663, b=1.674, g=1.699, bire=0.0360

Calculated Properties of Spodiosite

Electron Density:

Bulk Density (Electron Density)=2.91 gm/cc
note: Specific Gravity of Spodiosite =2.94 gm/cc.

Fermion Index:

Fermion Index = 0.0007156672
Boson Index = 0.9992843328

Photoelectric:

PE_Spodiosite= 5.91 barns/electron
U=PE_Spodiosite x rElectron Density= 17.19 barns/cc.

Radioactivity:

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

Spodiosite Classification

Dana Class:

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

(41.06)where (A)2 (XO4) Zq

(41.06.11)Dana Group

41.06.11.01 Spodiosite? Ca2(PO4)F Pbcm 2/m 2/m 2/m

Strunz Class:

08.XX.00 08 - PHOSPHATES, ARSENATES, VANADATES

08.X - Unclassified Strunz PHOSPHATES, ARSENATES, VANADATES

08.XX -Phosphate, Fluoride

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 Spodiosite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Spodiosite :
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 (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - Scandinavian mineral gallery
15 - WWW-MINCRYST

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

Spodiosite

Ca2(PO4)F
Dana No: 41.06.11.01 Strunz No: 08.XX.00
Locality:

Notes:

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