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Farallonite

Formula:
2MgO·W
 
2
O
 
5
·SiO
 
2
·nH
 
2
O?
System:MonoclinicColour:Sky blue to white.
Name:After the type locality, the Farellon (or Farallon) mine.


An inadequately described mineral that allegedly forms seasonally (summer rainy season) on wolframite-bearing outcrops.
Originally reported from Farallon Mine (Farellon mine), Cerro Tazna, Atocha-Quechisla District, Nor Chichas Province, Potosí Department, Bolivia.

Classification of Farallonite

IMA status:Questionable/Doubtful
mindat.org URL:http://www.mindat.org/min-31313.html
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Physical Properties of Farallonite

Lustre:Greasy
Colour:Sky blue to white.
Fracture:Conchoidal

Crystallography of Farallonite

Crystal System:Monoclinic

Chemical Properties of Farallonite

Formula:
2MgO·W
 
2
O
 
5
·SiO
 
2
·nH
 
2
O?
Essential elements:
All elements listed in formula:H, Mg, O, Si, W

Other Names for Farallonite

Synonyms:
Farrallonite
Spanish names:
Farallonita

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 Farallonite

Reference List:Kohanowski, N.N. (1953) Secondary enrichment in Bolivian tungsten deposits. Mines Mag. (Colorado), 43, # 2, 17-24.

Ahlfeld, F. & Munoz Reyes, J. (1955) Las Especies Minerales de Bolivia. 168 pp.

Internet Links for Farallonite

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    Localities for Farallonite

    (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.
    Bolivia
     
    • La Paz Department
      • Murillo Province
    		Federico Ahlfeld y Jorge Munoz Reyes (1955) Las Especies Minerales de Bolivia. (Banco Minero de Bolivia)
    • Potosí Department
      • Nor Chichas Province
        • Atocha-Quechisla District
          • Cerro Tazna
    		Kohanowski, N.N. (1953) Mines Mag. (Colorado) 43, #2, 17-24.
    Mineral and/or Locality
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