Arangasite
A valid IMA mineral species
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About Arangasite
Formula:
Al2F(PO4)(SO4) · 9H2O
Colour:
Colorless
Lustre:
Silky, Dull
Hardness:
1 - 2
Specific Gravity:
2.01
Crystal System:
Monoclinic
Name:
Named after the place of finding — the Arangas River.
Unique Identifiers
Mindat ID:
43332
Long-form identifier:
mindat:1:1:43332:9
GUID
(UUID V4):
(UUID V4):
24afef09-7c6e-4e63-b9b6-448a22b7164b
IMA Classification of Arangasite
Approved
IMA Formula:
Al2(SO4)(PO4)F · 9H2O
Approval year:
2012
First published:
2013
Classification of Arangasite
8.DB.
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
B : With only medium-sized cations, (OH, etc.):RO4< 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
B : With only medium-sized cations, (OH, etc.):RO4< 1:1
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Ans | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Arangasite
Silky, Dull
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
1 - 2 on Mohs scale
Cleavage:
Imperfect/Fair
Basal
Basal
Parting:
Not observed
Density:
2.01(1) g/cm3 (Measured) 2.001 g/cm3 (Calculated)
Optical Data of Arangasite
Type:
Biaxial (+)
RI values:
nα = 1.493(5) nγ = 1.485(5)
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Max Birefringence:
δ = 0.008
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic
Chemistry of Arangasite
Mindat Formula:
Al2F(PO4)(SO4) · 9H2O
Crystallography of Arangasite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/b
Setting:
P2/a
Cell Parameters:
a = 7.073(1) Å, b = 9.634(2) Å, c = 10.827(2) Å
β = 100.40(1)°
β = 100.40(1)°
Ratio:
a:b:c = 0.734 : 1 : 1.124
Unit Cell V:
725.7 ų
Z:
2
Morphology:
Compact white segregations composed of thin-lamella aggregates.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
10.57 Å | (36) |
9.60 Å | (100) |
7.123 Å | (23) |
5.295 Å | (34) |
4.695 Å | (17) |
4.191 Å | (29) |
3.218 Å | (50) |
2.870 Å | (20) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Arangasite
General Appearance of Type Material:
Compact white segregations composed of thin lamela aggregates.
Place of Conservation of Type Material:
The Fersman Museum of the Russian Academy of Science, Moscow, Russia, catalogue number 4254/1
Geological Setting of Type Material:
Cassiterite-silicate-sulfide ores of Alaskitovoye deposit (in Eastern Yakutia). It belongs to secondary minerals of the oxidation zone and occurs in cavities inside quartz-muscovite-tourmaline-sulfide veins and surrounding greisens.
Associated Minerals at Type Locality:
Reference:
Gamyanin, G.N., Zayakina, N.V., Galenchikova, L.T. (2013) Arangasite, Al2(PO4)(SO4)F·7.5Н2O, a new mineral from Alaskitovoye deposit (Eastern Yakutia, Russia). Zapiski Rossiiskogo Mineralogicheskogo Obshchetstva : 142(5): 21-30.
Synonyms of Arangasite
Related Minerals - Strunz-mindat Grouping
8.DB. | Camaronesite | [Fe3+(H2O)2(PO3OH)]2(SO4) · 1-2H2O |
8.DB. | Höslite | Fe3+3(VO4)2(SO4)(OH)(H2O)4 · 3H2O |
8.DB.05 | Diadochite | Fe3+2(PO4)(SO4)(OH) · 6H2O |
8.DB.05 | Pitticite | (Fe, AsO4, H2O) (?) |
8.DB.05 | Destinezite | Fe3+2(PO4)(SO4)(OH) · 6H2O |
8.DB.07 | Wilhelmgümbelite | ZnFe2+Fe3+3(PO4)3(OH)4(H2O)5 · 2H2O |
8.DB.07 | Schmidite | [Zn2(Fe3+,Mn2+)2Fe3+(PO4)3(OH)3(H2O)6] · 2H2O |
8.DB.07 | Wildenauerite | Zn(Fe3+,Mn2+)2MnFe3+(PO4)3(OH)3(H2O)6 · 2H2O |
8.DB.10 | Vashegyite | Al11(PO4)9(OH)6 · 38H2O |
8.DB.15 | Schoonerite | ZnMn2+Fe2+2Fe3+(PO4)3(OH)2 · 9H2O |
8.DB.20 | Sinkankasite | Mn2+Al(PO3OH)2(OH) · 6H2O |
8.DB.25 | Mitryaevaite | Al6(PO4)((P,S)O3(OH,O))2F2(OH)2 · 14.5H2O |
8.DB.30 | Sanjuanite | Al2(PO4)(SO4)(OH) · 9H2O |
8.DB.35 | Sarmientite | Fe3+2(AsO4)(SO4)(OH) · 5H2O |
8.DB.40 | Bukovskýite | Fe3+2(AsO4)(SO4)(OH) · 9H2O |
8.DB.40 | Flurlite | Zn3Mn2+Fe3+(PO4)3(OH)2 · 9H2O |
8.DB.40 | Manganflurlite | ZnMn2+3Fe3+(PO4)3(OH)2(H2O)7 · 2H2O |
8.DB.42 | Bohuslavite | Fe3+4(PO4)3(SO4)(OH) · nH2O |
8.DB.45 | Zýkaite | Fe3+4(AsO4)3(SO4)(OH) · 15H2O |
8.DB.47 | Lapeyreite | Cu3O[AsO3(OH)]2 · 0.75H2O |
8.DB.50 | Giniite | Fe2+Fe3+4(PO4)3(OH)5 · 2H2O |
8.DB.50 | Rossiantonite | Al3(PO4)(SO4)2(OH)2(H2O)14 |
8.DB.52 | Arctowskite | Al9(PO4)8(OH)3 · 27H2O |
8.DB.55 | Sasaite | (Al,Fe3+)14(PO4)11(SO4)(OH)7 · 83H2O |
8.DB.60 | Mcauslanite | Fe3Al2(PO4)3(PO3OH)F · 18H2O |
8.DB.65 | Goldquarryite | CuCd2Al3(PO4)4F2(H2O,F)2 · 10H2O |
8.DB.70 | Birchite | Cd2Cu2(PO4)2(SO4) · 5H2O |
8.DB.75 | Braithwaiteite | NaCu5(Ti4+Sb5+)(AsO4)4(HAsO4)2O2 · 8H2O |
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.
Internet Links for Arangasite
mindat.org URL:
https://www.mindat.org/min-43332.html
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References for Arangasite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2012) New minerals and nomenclature modifications approved in 2012. CNMNC Newsletter No 14. Mineralogical Magazine, 76 (5) 1281-1288 doi:10.1180/minmag.2012.076.5.15
Gamyanin, G. N., Zayakina, N. V., Galenchikova, L. T. (2014) Arangasite, Al2(PO4)(SO4)F · 7.5H2O, a new mineral from the Alyaskitovy deposit, Eastern Yakutia, Russia. Geology of Ore Deposits, 56 (7) 560-566 doi:10.1134/s107570151407006x
Localities for Arangasite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Williams et al. (2012) +1 other reference |
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Alyaskitovoye Sn-W deposit, Ust'-Nera, Indigirka River Basin, Sakha, Russia