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Mixed Minerals

Sunday, 21 February 2021 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including pyrargyrite, rhodochrosite, sanbornite, and sphalerite and more from places like Uchucchacua mine, Oyon prov., Lima dept., Peru, Rush Creek, Fresno Co., California, United States, and Picher, Tri-State Dist., Oklahoma, United States.

Pyrargyrite

with Quartz - #55154
Locality
Uchucchacua mine, Oyon prov., Lima dept., Peru 
Formula
Ag3SbS3 
Availability
Sold
Size
11 x 5.5 x 7 cm - Cabinet 
Tagged
sulfide , silver  

Try to find a good Pyrargyrite these days from Uchucchacua these days. This specimen is not too shaby and has a fairly good sized crystal to 6mm with several smaller with Quartz to 1.5cm.


Pyrargyrite

Formula
Ag3SbS3 
Crystal System
Trigonal 
Crystal Habit
Massive, Crystalline - Poor, Prismatic 
Cleavage
Poor, None, None 
Luster
Sub Metallic 
Color
deep red, red gray 
Streak
cherry red 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Brittle - Conchoidal 
Hardness
2.5 

Pyrargyrite

with Quartz - #55174
Locality
Uchucchacua mine, Oyon prov., Lima dept., Peru 
Formula
Ag3SbS3 
Availability
Sold
Size
4 x 3 x 2.5 cm - Miniature 
Tagged
sulfide , silver  

Miniture size specimen with a good 2.5mm crystal perched nicely at the center of the matrix and another to 4mm but not as exposed with several much smaller crystals about the rest of the matrix.


Pyrargyrite

Formula
Ag3SbS3 
Crystal System
Trigonal 
Crystal Habit
Massive, Crystalline - Poor, Prismatic 
Cleavage
Poor, None, None 
Luster
Sub Metallic 
Color
deep red, red gray 
Streak
cherry red 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Brittle - Conchoidal 
Hardness
2.5 

Pyrargyrite

with Quartz - #55178
Locality
Uchucchacua mine, Oyon prov., Lima dept., Peru 
Formula
Ag3SbS3 
Availability
Sold
Size
6 x 3 x 4 cm - Sm Cabinet 
Tagged
sulfide , silver  

This specimen has two good 2mm crystals with several smaller associated with Pyrite in heavy galena matrix.


Pyrargyrite

Formula
Ag3SbS3 
Crystal System
Trigonal 
Crystal Habit
Massive, Crystalline - Poor, Prismatic 
Cleavage
Poor, None, None 
Luster
Sub Metallic 
Color
deep red, red gray 
Streak
cherry red 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Brittle - Conchoidal 
Hardness
2.5 

Rhodochrosite

#55194
Locality
Uchucchacua mine, Oyon prov., Lima dept., Peru 
Formula
MnCO3 
Availability
Sold
Size
6.5 x 4 x 4 cm - Sm Cabinet 
Tagged
carbonate  

A 1.5cm, very lustrous and gemmy, Rhodochrosite crystal in a large pocket nicely contrated with the black sulfide rich matrix.


Rhodochrosite

Formula
MnCO3 
Crystal System
Trigonal 
Crystal Habit
Massive - Granular, Columnar, Botryoidal 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
pinkish red, red, rose red, yellowish gray, brown 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
SOLD
Sanbornite - PD42240
Sanbornite - PD42240

Sanbornite

with Macdonaldite - #PD42240
Locality
Rush Creek, Fresno Co., California, United States 
Formula
BaSi2O5 
Availability
Sold
Size
4 x 3 x 1 cm - Miniature 

Faint green to coloerless, platy Sanbornite.


Sanbornite

Formula
BaSi2O5 
Crystal System
Orthorhombic 
Crystal Habit
Platy 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Hardness
Collection
Don Phillips Collection

Sphalerite

with Chalcopyrite - #WR55185
Locality
Picher, Tri-State Dist., Oklahoma, United States 
Formula
ZnS 
Availability
Available
Price
$75.00
Size
9 x 6 x 4.5 cm - Sm Cabinet 
Tagged
sulfide  

Large deep red Sphalerite crystals with greasy luster to 2cm. In strong lighting the reds and yellowish green colors of the Sphalerite come alive. On the Sphalerite crystals are epitaxial Chalcopyrite crystals to 3mm. 


Sphalerite

Formula
ZnS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Granular, Colloform 
Cleavage
Perfect, Perfect, Perfect 
Luster
Resinous - Greasy 
Color
brown, yellow, red, green, black 
Streak
brownish white 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
3.5-4 
Collection
Willard L. Roberts Collection

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