Springcreekite Mineral Data

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General Springcreekite Information

Chemical Formula:

BaV+++3(PO4)2(OH,H2O)6

Composition:

Molecular Weight = 583.65 gm

Barium 23.53 % Ba 26.27 % BaO

Vanadium 26.18 % V 38.52 % V₂O₃

Phosphorus 10.61 % P 24.32 % P₂O₅

Hydrogen 1.30 % H 11.57 % H₂O

Oxygen 38.38 % O

______ ______

100.00 % 100.69 % = TOTAL OXIDE

Empirical Formula:

BaV³⁺₃(PO₄)₂(OH)_4.5(H₂O)_1.5

Environment:

In a cavity in brecciated quartz-geothite rock. A member of the crandallite group.

IMA Status:

Approved IMA 1998 (Dana # Added)

Locality:

The dumps of the Spring Creek copper mine near Wilminton, Southern Flinders Ranges, South Australia. Link to MinDat.org Location Data.

Name Origin:

Named after the locality.

Synonym:

ICSD 89037

IMA1998-048

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Springcreekite Crystallography

Axial Ratios:

a:c = 1:2.39198

Cell Dimensions:

a = 7.258, c = 17.361, Z = 3; V = 792.03 Den(Calc)= 3.67

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/I_o): 3.073(1)(113), 5.9(0.9)(101), 1.971(0.5)(033),1.814(0.4)(220), 2.301(0.4)(107,122), 3.627(0.4)(110),

Crystal Structure:

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Kolitsch U , Taylor M R , Fallon G D , Pring A , Neues Jahrbuch fur Mineralogie, Monatshefte , 1999 (1999) p.529-544, Springcreekite, BaV(3+)3(PO4)2(OH,H2O)6, a new member of the crandallite group,, from the Spring Creek mine, South Australia: the first natural V(3+)-member of, the alunite family and its crystal structure, Locality: Spring Creek mine, South Australia

Physical Properties of Springcreekite

Cleavage:

{102} Poor

Color:

Black.

Density:

3.48

Diaphaneity:

Opaque to translucent

Fracture:

Brittle - Irregular - Very brittle fracture producing irregular fragments

Habit:

Pseudo Cubic - Crystals show a cubic outline.

Habit:

Rhombohedral Crystals - Occurs as well-formed crystals showing rhobohedral crystals.

Hardness:

4-5 - Fluorite-Apatite

Luster:

Vitreous - Dull

Streak:

brownish black

Optical Properties of Springcreekite

Gladstone-Dale:

CI meas= -0.07 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2282,KPDmeas= 0.2407,KC= 0.225
Ncalc = 1.78 - 1.83

Optical Data:

Uniaxial (-), e=1.817, w=1.858, bire=0.0410.

Calculated Properties of Springcreekite

Electron Density:

Bulk Density (Electron Density)=3.45 gm/cc
note: Specific Gravity of Springcreekite =3.67 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_{Springcreekite}= 105.91 barns/electron
U=PE_{Springcreekite} x rElectron Density= 365.62 barns/cc.

Radioactivity:

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

Springcreekite Classification

Dana Class:

42.07.03.08 (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

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 Springcreekite Information

References:

NAME( MinRec, v 32, p 221) PHYS. PROP.(MinRec, v 32, p 221) OPTIC PROP.(MinRec, v 32, p 221)

See Also:

Links to other databases for Springcreekite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Springcreekite

BaV+++3(PO4)2(OH,H2O)6
Dana No: 42.07.03.08 Strunz No: 08.BL.10
Locality:

Notes: