Spodiosite Mineral Data

[Content and History] [Recent Issues] [Back Issues] [Subscriptions] [Contacts]
See Also: [Diamond Crystals] [Excalibur Minerals] [Hudson Institute] [Minerals on CDROM]
Mineral News was founded some twenty years ago and has developed a following of
avid mineral collectors seeking timely information about new finds and other items
of interest to the collector community. Articles are solicited from collector and scientific authors.

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

Search for Spodiosite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

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 - DipyramidalH-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

Search for Spodiosite using:

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

Visit our Advertisers for Spodiosite :

B and L Fine Minerals
Dakota Matrix Minerals
Dan & Diana Weinrich Mineral Auctions
Excalibur Mineral Corp.
Exceptional Minerals
John Betts Fine Minerals
Mineral News
Mineral of the Month Club
NY/NJ Gem & Mineral Show
TIMA Mineral Analyzer
Weinrich Minerals, Inc.
Wright's Rock Shop

Ask about Spodiosite 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 Spodiosite Specimen Label here :

Spodiosite

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

Notes: