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Alarsite

Formula:
Al[AsO
 
4
]
System:TrigonalColour:Cream-white to colourless
Lustre:VitreousHardness:5 - 5½
Name:The name is derived from its composition, contasining ALuminium and ARSenic.
This page provides mineralogical data about Alarsite.

Classification of Alarsite

IMA status:Approved 1993
Strunz 8th edition ID:7/A.01-12
Nickel-Strunz 10th (pending) edition ID:8.AA.05

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
A : With small cations (some also with larger ones)
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Type Occurrence of Alarsite

Type Locality:Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia
Geological Setting of type material:Fumarolic exhalations

Physical Properties of Alarsite

Lustre:Vitreous
Colour:Cream-white to colourless
Streak:White
Hardness (Mohs):5 - 5½
Cleavage:None Observed

Crystallography of Alarsite

Crystal System:Trigonal

Optical Data of Alarsite

Type:Uniaxial (+)
RI values: nω = 1.596 nε = 1.608
Maximum Birefringence:δ = 0.012

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Alarsite

Formula:
Al[AsO
 
4
]
Essential elements:Al, As, O
All elements listed in formula:Al, As, O

Relationship of Alarsite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.AA.05Berlinite
Al[PO
 
4
]
8.AA.05Rodolicoite
Fe
3+
 
[PO
 
4
]
8.AA.10Beryllonite
NaBe[PO
 
4
]
8.AA.15Hurlbutite
CaBe
 
2
[PO
 
4
]
 
2
8.AA.20Lithiophosphate
Li
 
3
[PO
 
4
]
8.AA.25Nalipoite
NaLi
 
2
[PO
 
4
]
8.AA.30Olympite
Na
 
5
Li[PO
 
4
]
 
2

Other Names for Alarsite

Synonyms:
IMA1993-003
Other Languages:
German:Alarsit
Russian:Аларсит
Spanish:Alarsita

Other Information

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

References for Alarsite

Reference List:Doklady Akademii Nauk: 338(4): 501-505.

Internet Links for Alarsite

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  • Raman and XRD data at RRUFF project
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  • Search for Alarsite in the Natural History Museum (London) online catalogue
  • Alarsite details from Handbook of Mineralogy (PDF)
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    Localities for Alarsite

    The 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. ? 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.
    Russia
     
    • Far-Eastern Region
      • Kamchatka Oblast'
        • Tolbachik volcano
    [DAN,(1994) 338, n4, 501-505; MinRec 27:201]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mineral and/or Locality
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