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Genthelvite-Helvite Series

Big Photo

Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
© D. Richerson

System:Isometric
Series Formula:
Zn
 
4
Be
 
3
[S|(SiO
 
4
)
 
3
]
-
Mn
2+
4
Be
 
3
[S|(SiO
 
4
)
 
3
]
A series between Genthelvite and Helvite

Classification of Genthelvite-Helvite Series

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Crystallography of Genthelvite-Helvite Series

Crystal System:Isometric

Optical Data of Genthelvite-Helvite Series

Type:Isotropic

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.

Internet Links for Genthelvite-Helvite Series

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    Localities for Genthelvite-Helvite Series

    (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.
    Sweden
     
    • Södermanland
      • Nynäshamn
    		GFF 113, pp.183-184
      • Stockholm
        • Haninge
    		Langhof, J., Holtstam, D. & Gustafsson, L. (2000): Chiavennite and zoned genthelvite-helvite as late-stage minerals of the Proterozoic LCT pegmatites at Utö, Stockholm, Sweden. Geologiska Föreningens Förhandlingar 122, 207-212
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    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: 9th Nov 2009 10:17:33