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Mixed Minerals

Friday, 06 January 2017 05:30 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including argyrodite, chlorargyrite, and tokkoite and more from places like Colquechaca, Potosi dept., Bolivia, San Rafael mine, Nye Co., Nevada, United States, and Chara and Tokko Rivers Confluence, Eastern Siberia, Russia.

Argyrodite

with Pyrargyrite - #BM46117
Locality
Colquechaca, Potosi dept., Bolivia 
Formula
Ag8GeS6 
Availability
Available
Price
$250.00
Size
4 x 3.5 x 2 cm - Miniature 
Tagged
silver  
Special Info
EDS Confirmed 

Black metallic mass which is moslty composed of Pyrargyite (EDS). There are tiny 1mm and less crystals which have tested out by EDS to be Argyrodite. You need a microscope to see the Argyrodite crystals which are camouflaged well by the Pyrargyrite. It is an old specimen that originated with Don Phillips, who sold it to Bill McConlogue, both of who sold their collections to me. As you can see someone glued a label on it prior to Phillips obtaining the specimen. I do not have an original label however. 


Argyrodite

Formula
Ag8GeS6 
Crystal System
Orthorhombic 
Crystal Habit
Subhedral Crystals, Massive - Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
black, steel gray 
Streak
grayish black 
Class
Orthorhombic - Pyramidal 
Fracture
Brittle - Conchoidal 
Hardness
2.5 
Collection
McConlogue Collection
Special Info
EDS Confirmed

Chlorargyrite

with Wulfenite & Mimetite - #40201
Locality
San Rafael mine, Nye Co., Nevada, United States 
Formula
AgCl 
Availability
Available
Price
$55.00
Size
6 x 4.5 x 5 cm - Sm Cabinet 
Tagged
silver  

Waxy grayish green formless groups of Chlorargyrite to 5mm in decayed Galena with blonde Wulfenite crystals to about 1mm. Also associated is colorless prismatic Mimetite.


Chlorargyrite

Formula
AgCl 
Crystal System
Isometric 
Crystal Habit
Massive, Columnar 
Cleavage
None, None, None 
Luster
Adamantine - Resinous 
Color
purplish gray, green, white, colorless 
Streak
white 
Class
Isometric - Hexoctahedral 
Fracture
Sectile 
Hardness
1-1.5 

Tokkoite

#PD46108
Locality
Chara and Tokko Rivers Confluence, Eastern Siberia, Russia 
Formula
K2Ca4Si7O18(OH)F 
Availability
Available
Price
$25.00
Size
2.5 x 0.5 x 0.5 cm - Thumbnail 
Special Info
Type Locality 

A tight packed, splintery mass of light purple Charoite with yellowish brown Tokkoite.


Tokkoite

Formula
K2Ca4Si7O18(OH)F 
Crystal System
Triclinic 
Crystal Habit
Radial, Columnar, Aggregates 
Cleavage
Perfect, Very Good, None 
Luster
Vitreous (Glassy) 
Color
brownish yellow, colorless, light yellow 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Splintery 
Hardness
4-5 
Collection
Phillips Collection
Special Info
Type Locality
Mineralpedia
View Tokkoite
On Dakota Matrix
Previously Sold Tokkoite
On Dakota Matrix
Other Available Tokkoite
WebMineral
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Mindat
View Tokkoite

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