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Vantasselite

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René Van Tassel
Formula:
Al4(PO4)3(OH)3 · 9H2O
System:
Orthorhombic
Colour:
White
Hardness:
2 - 2½
Name:
Named after René Van Tassel (b. 1916, d. 20 march 2013), mineralogist, Belgian Institute for Natural Sciences.
Vantasselite Group

Classification of Vantasselite

Approved 1986
8.DC.37

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
42.12.1.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
12 : (AB)4(XO4)3Zq·xH2O
19.7.10

19 : Phosphates
7 : Phosphates of Al alone
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First Recorded Occurrence of Vantasselite

Year of Discovery:
1986

Physical Properties of Vantasselite

Pearly
Colour:
White
Hardness (Mohs):
2 - 2½

Crystallography of Vantasselite

Crystal System:
Orthorhombic
Cell Parameters:
a = 10.52Å, b = 16.54Å, c = 20.37Å
Ratio:
a:b:c = 0.636 : 1 : 1.232
Unit Cell Volume:
V 3,544.40 ų (Calculated from Unit Cell)

Optical Data of Vantasselite

Type:
Biaxial (-)
RI values:
nα = 1.511 - 1.511 nβ = 1.560 nγ = 1.578
2V:
Measured: 61° , Calculated: 60°
Max Birefringence:
δ = 0.067
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
strong

Chemical Properties of Vantasselite

Formula:
Al4(PO4)3(OH)3 · 9H2O
Essential elements:
All elements listed in formula:

Relationship of Vantasselite to other Species

8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2O
8.DC.07EuchroiteCu2(AsO4)(OH) · 3H2O
8.DC.10LegranditeZn2(AsO4)(OH) · H2O
8.DC.12StrashimiriteCu8(AsO4)4(OH)4 · 5H2O
8.DC.15ArthuriteCuFe23+(AsO4)2(OH)2 · 4H2O
8.DC.15EarlshannoniteMn2+Fe23+(PO4)2(OH)2 · 4H2O
8.DC.15OjuelaiteZnFe23+(AsO4)2(OH)2 · 4H2O
8.DC.15WhitmoreiteFe2+Fe23+(PO4)2(OH)2 · 4H2O
8.DC.15Cobaltarthurite(Co,Mg)Fe23+(AsO4)2(OH)2 · 4H2O
8.DC.15BendadaiteFe2+Fe23+(AsO4)2(OH)2 · 4H2O
8.DC.15KunatiteCuFe23+(PO4)2(OH)2 · 4H2O
8.DC.15UKI-2006-(PO:FeHZn)ZnFe23+(PO4)2(OH)2 · 4H2O
8.DC.15UKI-2006-(PO:AlCuFeH)Fe2+Al3(PO4)2(OH)2 · 4H2O
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2O
8.DC.20BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
8.DC.20CoralloiteMn2+Mn23+(AsO4)2(OH)2 · 4H2O
8.DC.22KovdorskiteMg2(PO4)(OH) · 3H2O
8.DC.25FerristrunziteFe3+Fe23+(PO4)2(OH)3 · 5H2O
8.DC.25FerrostrunziteFe2+Fe23+(PO4)2(OH)2 · 6H2O
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
8.DC.25MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
8.DC.25StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
8.DC.27BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2O
8.DC.30LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2O
8.DC.30ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
8.DC.30PseudolaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
8.DC.30StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30UshkoviteMgFe23+(PO4)2(OH)2 · 8H2O
8.DC.30FerrolaueiteFe2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2O
8.DC.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2O
8.DC.30NordgauiteMnAl2(PO4)2(F,OH)2 · 5H2O
8.DC.32TinticiteFe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2O
8.DC.35VauxiteFe2+Al2(PO4)2(OH)2 · 6H2O
8.DC.40CacoxeniteFe243+Al(PO4)17O6(OH)12 · 17H2O
8.DC.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
8.DC.45Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2O
8.DC.50WavelliteAl3(PO4)2(OH,F)3 · 5H2O
8.DC.50AllanpringiteFe33+(PO4)2(OH)3 · 5H2O
8.DC.52KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2O
8.DC.55MapimiteZn2Fe33+(AsO4)3(OH)4 · 10H2O
8.DC.57OgdensburgiteCa2Fe43+(Zn,Mn2+)(AsO4)4(OH)6 · 6H2O
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2O
8.DC.60Cloncurryite(Cu,VO)Al2(PO4)2(F,OH)2 · 4.5-5H2O
19.7.1BerliniteAlPO4
19.7.2AugeliteAl2(PO4)(OH)3
19.7.3TrolleiteAl4(PO4)3(OH)3
19.7.4SenegaliteAl2(PO4)(OH)(OH)2 · H2O
19.7.5VarisciteAlPO4 · 2H2O
19.7.6MetavarisciteAlPO4 · 2H2O
19.7.7BolivariteAl2(PO4)(OH)3 · 4-5H2O
19.7.8WavelliteAl3(PO4)2(OH,F)3 · 5H2O
19.7.9EvansiteAl3(PO4)(OH)6 · 6H2O
19.7.11KingiteAl3(PO4)2F2(OH) · 7H2O
19.7.12VashegyiteAl11(PO4)9(OH)6 · 38H2O

Other Names for Vantasselite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Vantasselite

Reference List:
Fransolet, A.-M. (1987) La Vantasselite, une nouvelle espèce minérale du Massif de Stavelot, Belgique. Bulletin Minéralogique, 110, 647-656.

American Mineralogist (1988): 73: 931.

Internet Links for Vantasselite

Localities for Vantasselite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Belgium
 
  • Luxembourg Province
    • Stavelot Massif
      • Vielsalm
Bull.Min.(1987) 110, 647-656; J.W. Anthony, R.A. Bideaux, K.W. Bladh, M.C. Nichols: Handbook of Mineralogy, Vol. IV (2000); Daltry, Vaughn & Deliens, Michel (1994) The Type Mineralogy of Belgium . Annals of the Belgium Geological Society 116:15-28
A. Van Herreweghe collection
Germany
 
  • Hesse
    • Wetzlar
      • Weilburg
        • Essershausen
Blaß, G. (2002): Eine neue Phosphatmineralien-Paragenese von der Grube Mark bei Essershausen, mittleres Lahngebiet, Taunus. Mineralien-Welt, 13 (6), 18-43. (in German)
  • North Rhine-Westphalia
    • Sauerland
      • Meschede
        • Bestwig
Wittern: "Mineralfundorte in Deutschland", 2001
Japan
 
  • Honshu Island
    • Kinki region
      • Mie Prefecture
Inaba & Minakawa (1996) Chigaku Kenkyu, 44, 199-203.
Mineral and/or Locality  
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