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Fluor-dravite from
Crabtree Mine (Big Crabtree Emerald Mine), Spruce Pine, Spruce Pine Mining District, Mitchell Co., North Carolina, USA

Locality type:Mine
Classification
Species:Fluor-dravite
Formula:Na(Mg3)Al6(Si6O18)(BO3)3(OH)3F
Comments:Associated with plagioclase,K-feldspar,Quartz,Beryl,Muscovite,Garnet group,Biotite, and Fluorite.
Habit:Anhedral, up to a few mm in size,occurs as isolated grains.
Colour:Blackish-Brown
Luminescent properties:None in S.W or L.W light
Confirmation
Validity:Valid - Type Locality
References
References:Clark, C.M., Hawthorne, F.C., Ottolini, L. (2011): Fluor-dravite, NaMg3Al6Si6O18(BO3)3(OH)3F, a new mineral of the tourmaline group from the Crabtree emerald mine, Mitchell County, North Carolina: description and crystal structure. Canadian Mineralogist, 49, 57-62.
Data
Mineral Data:Click here to view Fluor-dravite data
Locality Data:Click here to view Crabtree Mine (Big Crabtree Emerald Mine), Spruce Pine, Spruce Pine Mining District, Mitchell Co., North Carolina, USA
 
Mineral and/or Locality  
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