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Danalite

#PD34826
SOLD
Danalite from Rockport, Essex Co., Massachusetts, United States - PD34826
Danalite from Rockport, Essex Co., Massachusetts, United States - PD34826

Danalite

#PD34826
Availability
Sold
Size
7 x 9 x 3 cm - Sm Cabinet 
Formula
Be3Fe2+4(SiO4)3S (RRUFF)
Locality
Rockport, Essex Co., Massachusetts, United States

A piece of the Cape Ann Granite with a 3 x 1cm area of pink crystalline Danalite, a rare Berillium Silicate and member of the Helvite Group, discovered at Rockport and named for James Dwight Dana. Associated with black micaceous crystals of Annite also, another TL mineral from Rockport.

Comes with a label from Paul Moore Collection with the number 680, which matches the tag on the backside of the specimen.

Type Locality

Danalite

Formula
Be3Fe2+4(SiO4)3S 
Crystal System
Isometric 
Crystal Habit
Massive 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Greasy 
Color
brown, brownish black, grayish yellow, pink, reddish brown 
Streak
gray white 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
5.5-6 

Data courtesy of Webmineral.

Collection
Phillips Collection
Special Info
Type Locality

P. Moore label

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