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Farallonite

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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?
All elements listed in formula:H, Mg, O, Si, W

Other Names for Farallonite

Synonyms:
Farrallonite
Other Languages:
Spanish: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

    Hide Locality List
    (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.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. 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. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 21st Jun 2011 22:16:35
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