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0 item @ $0.00  

Mixed & Rare Minerals

Sunday, 30 October 2022 07:00 PM

Introducing the "Mixed & Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including diopside, silver, and walstromite and more from places like Chamachhu, Haramosh Mts., Roundu dist., Gilgit-Baltistan, Pakistan, Houghton Co., Michigan, United States, and Esquire #7 claim, Big Creek, Fresno Co., California, United States.

Diopside

chromian - #59501
Locality
Chamachhu, Haramosh Mts., Roundu dist., Gilgit-Baltistan, Pakistan 
Formula
CaMgSi2O6 
Availability
Available
Price
$50.00
Size
3 x 1 x .4 cm - Thumbnail 

A sweet prismatic crystal of chromium Diopside with a good termination.


Diopside

Formula
CaMgSi2O6 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Blocky, Granular 
Cleavage
Good, Indistinct, None 
Luster
Vitreous (Glassy) 
Color
blue, brown, colorless, green, gray 
Streak
white green 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
Mineralpedia
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Previously Sold Diopside
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Silver

with Copper - #WR59554
Locality
Houghton Co., Michigan, United States 
Formula
Ag 
Availability
Sold
Size
2.5 x 1.2 x 0.9 cm - Thumbnail 
Tagged
native element  

A Silver and Copper nugget.


Silver

Formula
Ag 
Crystal System
Isometric 
Crystal Habit
Arborescent, Dendritic, Massive 
Cleavage
None, None, None 
Luster
Metallic 
Color
silver white, gray white, gray 
Streak
silver white 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
Willard L. Roberts Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Silver
On Dakota Matrix
Other Available Silver
WebMineral
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Mindat
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Walstromite

withFresnoite & Benitoite - #59294
Locality
Esquire #7 claim, Big Creek, Fresno Co., California, United States 
Formula
BaCa2Si3O9 
Availability
Sold
Size
7 x 5 x 3 cm - Sm Cabinet 
Special Info
Fluorescent 
Special Info
Type Locality 

Without the aid of a UV light, Walstromite is hard to identify. In this case the pearly white crystal grains are the Walstromite which is flurescent orange. It occurs with tiny grains of Benitoite (blue, FL) and yellow Fresnoite.  Rich specimen. Rare.


Walstromite

Formula
BaCa2Si3O9 
Crystal System
Triclinic 
Crystal Habit
Granular 
Cleavage
Perfect, Perfect, Very Good 
Luster
Vitreous - Pearly 
Color
colorless, white 
Streak
white 
Class
Triclinic - Pinacoidal 
Hardness
3.5 
Special Info
Fluorescent
Special Info
Type Locality

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