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Alarsite

Big Photo

Northern Breakthrough (North Breach), Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia
© 2008, JGW

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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    Localities for Alarsite

    Hide Locality List
    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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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 6th Nov 2009 13:55:07