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Mixed Minerals

Sunday, 20 November 2022 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including matulaite, metatorbernite, miargyrite, molybdenite, molybdofornacite, and parapierrotite and more from places like Bachman mine, Northampton Co., Pennsylvania, United States, Arcu su Linnarbu, Capoterra, Cagliari prov., Sardinia, Italy, Van Silver Claims, British Columbia, Canada, Climax mine, Lake Co., Colorado, United States, San Pablo mine, Inca de Oro, Chile, and Lookout Pass, Tooele Co., Utah, United States.

Matulaite

#59766
Locality
Bachman mine, Northampton Co., Pennsylvania, United States 
Formula
CaAl18(PO4)12(OH)20·28H2
Availability
Available
Price
$65.00
Size
5.5 x 2.5 x 3.5 cm - Sm Cabinet 
Tagged
phosphate  
Special Info
Type Locality 

Pearly white flakes across face. Rich, very good speicmen from the type locality.


Matulaite

Formula
CaAl18(PO4)12(OH)20·28H2
Crystal System
Monoclinic 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
colorless, white 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
Special Info
Type Locality
Mineralpedia
View Matulaite
On Dakota Matrix
Previously Sold Matulaite
On Dakota Matrix
Other Available Matulaite
WebMineral
View Matulaite
Mindat
View Matulaite

Metatorbernite

#AH59752
Locality
Arcu su Linnarbu, Capoterra, Cagliari prov., Sardinia, Italy 
Formula
Cu(UO2)2(PO4)2·8H2
Availability
Available
Price
$25.00
Size
4 x 3 x 2.5 cm - Miniature 
Tagged
phosphate , copper  

Tiny, less than 0.5mm, tabular green Torbernite crystals.


Metatorbernite

Formula
Cu(UO2)2(PO4)2·8H2
Crystal System
Tetragonal 
Cleavage
Perfect, None, None 
Luster
Vitreous - Adamantine 
Color
light green, dark green 
Streak
light green 
Class
Tetragonal - Dipyramidal 
Fracture
Brittle 
Hardness
2.5 
Collection
Arnold G Hampson Collection

Miargyrite

with Galena - #59709
Locality
Van Silver Claims, British Columbia, Canada 
Formula
AgSbS2 
Availability
Sold
Size
2 x 1.5 x 1.5 cm - Thumbnail 
Tagged
sulfide , silver  

A 3.5mm striated crystal with Galena. Aside from the crystal are deep red fractured Miargyrite which in-hand does not show the red at all. There are a few tiny, prismatic crystals, which are not identified. Ex. Mark Mauthner.


Miargyrite

Formula
AgSbS2 
Crystal System
Monoclinic 
Crystal Habit
Euhedral Crystals, Disseminated, Massive 
Cleavage
Imperfect, None, None 
Luster
Sub Metallic 
Color
steel gray, lead gray, blackish red, reddish gray 
Streak
cherry red 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2-2.5 

Molybdenite

#59762
Locality
Climax mine, Lake Co., Colorado, United States 
Formula
MoS2 
Availability
Sold
Size
4 x 2.5 x 1.5 cm - Miniature 
Tagged
sulfide  

Thick, tightly packed silvery Molybdenite "books" to 1cm. Excellent specimen from this historic locality which is still producing.


Molybdenite

Formula
MoS2 
Crystal System
Hexagonal 
Crystal Habit
Foliated, Massive, Disseminated 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
black, lead gray, gray 
Streak
greenish gray 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Sectile 
Hardness

Molybdofornacite

#59695
Locality
San Pablo mine, Inca de Oro, Chile 
Formula
CuPb2MoO4AsO4(OH) 
Availability
Sold
Size
6 x 2.5 x 2.5 cm - Sm Cabinet 
Tagged
copper  

Bright green platey crystals in 0.25mm bundles. The specimen is rich in Molybdofornacite with two areas showing scattered and grouped occurences. Molybdofornacite is a fairly rare species.


Molybdofornacite

Formula
CuPb2MoO4AsO4(OH) 
Crystal System
Monoclinic 
Crystal Habit
Pistolitic, Lath 
Cleavage
None, None, None 
Luster
Adamantine 
Color
light green 
Streak
yellow 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
2-3 

Parapierrotite

#59703
Locality
Lookout Pass, Tooele Co., Utah, United States 
Formula
TlSb5S8 
Availability
Sold
Size
4 x 3 x 2.5 cm - Miniature 
Tagged
sulfide  

Silvery metallic grains to 2mm. Rich.


Parapierrotite

Formula
TlSb5S8 
Crystal System
Monoclinic 
Crystal Habit
Prismatic 
Cleavage
None, None, None 
Luster
Sub Metallic 
Color
black 
Streak
gray 
Class
Monoclinic - Prismatic 
Hardness
2.5-3 

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