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Arangasite

A valid IMA mineral species
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00547000017272472201959.jpg
Arangasite

Alyaskitovoye Sn-W deposit, Ust'-Nera, Indigirka River Basin, Sakha, Russia
00547000017272472201959.jpg
Arangasite

Alyaskitovoye Sn-W deposit, Ust'-Nera, Indigirka River Basin, Sakha, Russia
00547000017272472201959.jpg
Arangasite

Alyaskitovoye Sn-W deposit, Ust'-Nera, Indigirka River Basin, Sakha, Russia
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About ArangasiteHide

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.
Chemically related to sanjuanite and mitryaevaite.
Structurally related to destinezite.



Unique IdentifiersHide

Mindat ID:
43332
Long-form identifier:
mindat:1:1:43332:9

IMA Classification of ArangasiteHide

Classification of ArangasiteHide

Strunz-mindat (2026):
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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
AnsIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of ArangasiteHide

Lustre:
Silky, Dull
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
1 - 2 on Mohs scale
Cleavage:
Imperfect/Fair
Basal
Parting:
Not observed
Density:
2.01(1) g/cm3 (Measured)    2.001 g/cm3 (Calculated)

Optical Data of ArangasiteHide

Type:
Biaxial (+)
RI values:
nα = 1.493(5) nγ = 1.485(5)
Max. Birefringence:
δ = 0.000
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.

Surface Relief:
Moderate
Pleochroism:
Non-pleochroic

Chemistry of ArangasiteHide

Mindat Formula:
Al2F(PO4)(SO4) · 9H2O
Element Weights:
Element% weight
O63.827 %
Al12.663 %
S7.525 %
P7.269 %
F4.458 %
H4.258 %

Calculated from ideal end-member formula.
Elements listed:
Al, F, H, O, P, S - search for minerals with similar chemistry

Crystallography of ArangasiteHide

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)°
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 DiffractionHide

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest 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 ArangasiteHide

Type Locality:
ⓘ Alyaskitovoye Sn-W deposit, Ust'-Nera, Indigirka River Basin, Sakha, Russia
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:
ColquiriiteFluelliteGypsumMansfielditeScorodite
SinkankasiteStrengite
Reference:
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

Synonyms of ArangasiteHide

Other Language Names for ArangasiteHide

French:Arangasite
German:Arangasit
Norwegian:Arangasitt

Related Minerals - Strunz-mindat GroupingHide

8.DB.HösliteFe3+3(VO4)2(SO4)(OH)(H2O)4 · 3H2OMon. 2/m : P21/b
8.DB.Camaronesite[Fe3+(H2O)2(PO3OH)]2(SO4) · 1-2H2OTrig. 32 : R32
8.DB.05DestineziteFe3+2(PO4)(SO4)(OH) · 6H2OTric. 1 : P1
8.DB.05Pitticite(Fe, AsO4, H2O) (?)Amor.
8.DB.05DiadochiteFe3+2(PO4)(SO4)(OH) · 6H2OAmor.
8.DB.07WilhelmgümbeliteZnFe2+Fe3+3(PO4)3(OH)4(H2O)5 · 2H2OOrth. mmm(2/m2/m2/m)
8.DB.07Schmidite[Zn2(Fe3+,Mn2+)2Fe3+(PO4)3(OH)3(H2O)6] · 2H2OOrth.
8.DB.07WildenaueriteZn(Fe3+,Mn2+)2MnFe3+(PO4)3(OH)3(H2O)6 · 2H2OOrth. mmm(2/m2/m2/m) : Pbam
8.DB.10VashegyiteAl11(PO4)9(OH)6 · 38H2OOrth. mmm(2/m2/m2/m)
8.DB.15SchooneriteZnMn2+Fe2+2Fe3+(PO4)3(OH)2 · 9H2OOrth. mmm(2/m2/m2/m) : Pbam
8.DB.20SinkankasiteMn2+Al(PO3OH)2(OH) · 6H2OTric. 1 : P1
8.DB.25MitryaevaiteAl6(PO4)((P,S)O3(OH,O))2F2(OH)2 · 14.5H2OTric. 1 : P1
8.DB.30SanjuaniteAl2(PO4)(SO4)(OH) · 9H2OTric.
8.DB.35SarmientiteFe3+2(AsO4)(SO4)(OH) · 5H2OMon. 2/m : P21/b
8.DB.40BukovskýiteFe3+2(AsO4)(SO4)(OH) · 9H2OTric. 1 : P1
8.DB.40ManganflurliteZnMn2+3Fe3+(PO4)3(OH)2(H2O)7 · 2H2OMon. 2/m : P21/m
8.DB.40FlurliteZn3Mn2+Fe3+(PO4)3(OH)2 · 9H2OMon. 2/m : P21/m
8.DB.42BohuslaviteFe3+4(PO4)3(SO4)(OH) · nH2OTric. 1 : P1
8.DB.45ZýkaiteFe3+4(AsO4)3(SO4)(OH) · 15H2OOrth. 222 : P222
8.DB.47LapeyreiteCu3O[AsO3(OH)]2 · 0.75H2OMon. 2/m : B2/m
8.DB.50RossiantoniteAl3(PO4)(SO4)2(OH)2(H2O)14Tric. 1 : P1
8.DB.50GiniiteFe2+Fe3+4(PO4)3(OH)5 · 2H2OMon. 2/m : P2/b
8.DB.52'Arctowskite'Al9(PO4)8(OH)3 · 27H2OOrth.
8.DB.55Sasaite(Al,Fe3+)14(PO4)11(SO4)(OH)7 · 83H2OOrth.
8.DB.60McauslaniteFe3Al2(PO4)3(PO3OH)F · 18H2OTric.
8.DB.65GoldquarryiteCuCd2Al3(PO4)4F2(H2O,F)2 · 10H2OTric. 1 : P1
8.DB.70BirchiteCd2Cu2(PO4)2(SO4) · 5H2OOrth. mmm(2/m2/m2/m) : Pnma
8.DB.75BraithwaiteiteNaCu5(Ti4+Sb5+)(AsO4)4(HAsO4)2O2 · 8H2OTric. 1 : P1

Other InformationHide

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 ArangasiteHide

References for ArangasiteHide

Localities for ArangasiteHide

Showing 1 localities.

This 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.
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Locality ListHide

- 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.
Russia (TL)
 
  • Sakha
    • Indigirka River Basin
      • Ust'-Nera
Williams et al. (2012) +1 other reference
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