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0 item @ $0.00  

Mixed Minerals

Thursday, 07 February 2019 08:00 AM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including astrophyllite, datolite, and willemite and more from places like Khibiny Massif, Kola Peninsula, Russia, Freiberg dist., Erzgebirge, Saxony, Germany, and Garpenberg Norra mine, Hedemora, Dalarna, Sweden.

Astrophyllite

#DP50212
Locality
Khibiny Massif, Kola Peninsula, Russia 
Formula
K2NaFe2+7Ti2(Si4O12)2O2(OH)4
Availability
Available
Price
$50.00
Size
6 x 3.5 x 3 cm - Sm Cabinet 

Coppery red long bladed crystals to over 1cm in syenite matrix.


Astrophyllite

Formula
K2NaFe2+7Ti2(Si4O12)2O2(OH)4
Crystal System
Triclinic 
Crystal Habit
Bladed, Stellate, Crystalline - Fine 
Cleavage
Perfect, None, None 
Luster
Adamantine - Pearly 
Color
brown, brownish red, bronze yellow, gold yellow 
Streak
yellowish brown 
Class
Triclinic - Pedial 
Fracture
Brittle 
Hardness
3-3.5 
Collection
Don Phillips Collection

Datolite

with Calcite - #50182
Locality
Freiberg dist., Erzgebirge, Saxony, Germany 
Formula
CaBSiO4(OH) 
Availability
Sold
Size
7 x 5 x 2 cm - Sm Cabinet 

Colorless to yellow crystals of Datolite (?) to 1.2cm with discoidal Calcite.


Datolite

Formula
CaBSiO4(OH) 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Granular, Porcelainous 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
brown, colorless, yellow, white, light green 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
5.5 
Collection
Don Phillips Collection
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Willemite

with Wollastonite - #44020
Locality
Garpenberg Norra mine, Hedemora, Dalarna, Sweden 
Formula
Zn2SiO4 
Availability
Sold
Size
6 x 4 x 2.5 cm - Sm Cabinet 
Special Info
Fluorescent 

Granular, massive and crystalline Willemite (FL green) with pink Rhodonite.


Willemite

Formula
Zn2SiO4 
Crystal System
Trigonal 
Crystal Habit
Prismatic, Massive - Granular, Massive 
Cleavage
Poor, Poor, None 
Luster
Vitreous - Resinous 
Color
white, yellow, green, reddish brown, black 
Streak
white 
Class
Trigonal - Rhombohedral 
Fracture
Uneven 
Hardness
5.5 
Special Info
Fluorescent
Mineralpedia
View Willemite
On Dakota Matrix
Previously Sold Willemite
On Dakota Matrix
Other Available Willemite
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Mindat
View Willemite

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