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Mixed Minerals

Sunday, 24 July 2022 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including galena, gillespite, hedenbergite, kyanite, lollingite, and metacinnabar and more from places like Brushy Creek mine, Reynolds Co., Missouri, United States, Trumbull Peak, Mariposa Co., California, United States, St. Lawrence dep., Leeds and Grenville Co., Ontario, Canada, Fleimstal, Tyrol, Austria, Tremearne pegmatite, Breage, Cornwall, England,, and Ryne mine, Mount Diablo, Contra Costa Co., California, United States.

Galena

#AH58854
Locality
Brushy Creek mine, Reynolds Co., Missouri, United States 
Formula
PbS 
Availability
Sold
Size
8 x 7 x 5.5 cm - Sm Cabinet 

Octahedral Galena crystals with cubic forms. Nice piece.


Galena

Formula
PbS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive - Granular, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Metallic 
Color
light lead gray, dark lead gray 
Streak
grayish black 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
2.5 
Collection
Arnold G Hampson Collection
Mineralpedia
View Galena
On Dakota Matrix
Previously Sold Galena
On Dakota Matrix
Other Available Galena
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Mindat
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Gillespite

with Alforsite & Sanbornite - #BW58831
Locality
Trumbull Peak, Mariposa Co., California, United States 
Formula
BaFe2+Si4O10 
Availability
Sold
Size
11 x 8 x 2.5 cm - Cabinet 
Special Info
Type Locality 

Red streaks of Gillespite with faint green Sanbornite.


Gillespite

Formula
BaFe2+Si4O10 
Crystal System
Tetragonal 
Crystal Habit
Aggregates 
Cleavage
Good, Good, Poor 
Luster
Vitreous (Glassy) 
Color
red 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Brittle 
Hardness
Collection
Bill Wilson Collection
Special Info
Type Locality

Hedenbergite

in Calcite - #BW58858
Locality
St. Lawrence dep., Leeds and Grenville Co., Ontario, Canada 
Formula
CaFe2+Si2O6 
Availability
Sold
Size
6 x 4.5 x 5 cm - Sm Cabinet 

Green, rounded, 1 to 3mm Hedenbergite crystals in Calcite.


Hedenbergite

Formula
CaFe2+Si2O6 
Crystal System
Monoclinic 
Crystal Habit
Granular, Crystalline - Fine, Lamellar 
Cleavage
Perfect, Indistinct, None 
Luster
Vitreous - Pearly 
Color
brownish green, gray green, grayish black, dark green, black 
Streak
white green 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
5-6 
Collection
Bill Wilson Collection

Kyanite

var. disthene - #BW58837
Locality
Fleimstal, Tyrol, Austria 
Formula
Al2OSiO4 
Availability
Sold
Size
8 x 6 x 3.5 cm - Sm Cabinet 

Yes, usually Kyanite is blue. Yellow Kyanite is rare and on this specimen there are gorgeous orange-yellow thin-bladed crystals to 4cm.


Kyanite

Formula
Al2OSiO4 
Crystal System
Triclinic 
Crystal Habit
Columnar, Fibrous 
Cleavage
Perfect, Imperfect, None 
Luster
Vitreous - Pearly 
Color
blue, white, gray, green, black 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Brittle 
Hardness
4-7 
Collection
Bill Wilson Collection
Mineralpedia
View Kyanite
On Dakota Matrix
Previously Sold Kyanite
On Dakota Matrix
Other Available Kyanite
WebMineral
View Kyanite
Mindat
View Kyanite

Lollingite

#BW58836
Locality
Tremearne pegmatite, Breage, Cornwall, England, 
Formula
FeAs2 
Availability
Sold
Size
7.5 x 4.5 x 4 cm - Sm Cabinet 
Tagged
sulfide  

Plates of silvery Arsenopyrite to 3cm throughout mass with Microcline and Quartz.


Lollingite

Formula
FeAs2 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular, Prismatic, Twinning Common 
Cleavage
Distinct, None, None 
Luster
Metallic 
Color
silvery white, tarnish gray 
Streak
grayish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
Collection
Bill Wilson Collection

Metacinnabar

#BW58833
Locality
Ryne mine, Mount Diablo, Contra Costa Co., California, United States 
Formula
HgS 
Availability
Sold
Size
5 x 4 x 4 cm - Miniature 
Tagged
sulfide  

An superb specimen of dark grey or black Metacinnabar crystals to 1mm. Most of the crystals are well-defined.


Metacinnabar

Formula
HgS 
Crystal System
Isometric 
Crystal Habit
Granular, Encrustations 
Cleavage
None, None, None 
Luster
Metallic 
Color
black, gray black 
Streak
black 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
Collection
Bill Wilson Collection

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