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Recently Released New Additions

Mixed Minerals

Sunday, 26 February 2023 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including sekaninaite, sterryite, stibnite, and thermonatrite and more from places like Dolni Bory, Moravia, Czech Republic, Pollone mine, Valdicastello Carducci, Apuan Alps, Lucca, Tuscany, Italy, Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy, and Owens lake, Inyo Co., California, United States.

SOLD
Sekaninaite - BAC61129
Sekaninaite - BAC61129

Sekaninaite

#BAC61129
Locality
Dolni Bory, Moravia, Czech Republic 
Formula
Fe2+2Al4Si5O18 
Availability
Sold
Size
1.5 x 1.8 x 1.7 cm - Thumbnail 

Glassy greenish grey crystalline mass.


Sekaninaite

Formula
Fe2+2Al4Si5O18 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Fine 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
blue, blue violet, violet blue, gray blue 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Uneven 
Hardness
7.5 
Collection
William & Anne Cook Collection
Mineralpedia
View Sekaninaite
On Dakota Matrix
Previously Sold Sekaninaite
On Dakota Matrix
Other Available Sekaninaite
WebMineral
View Sekaninaite
Mindat
View Sekaninaite
Sterryite - 60989
Sterryite - 60989

Sterryite

#60989
Locality
Pollone mine, Valdicastello Carducci, Apuan Alps, Lucca, Tuscany, Italy 
Formula
(Ag,Cu)2Pb10(Sb,As)12S29 
Availability
Available
Price
$95.00
Size
5.5 x 4 x 3 cm - Sm Cabinet 
Tagged
sulfide , copper , silver  

1-3mm metallic bladed crystals in Quartz and some out of Quartz. Rich specimen with some other unidentified metallic crystals (maybe just Pyrite, but awfully small to determine).


Sterryite

Formula
(Ag,Cu)2Pb10(Sb,As)12S29 
Crystal System
Orthorhombic 
Crystal Habit
Plumose 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
black 
Streak
metallic 
Class
Orthorhombic - Dipyramidal 
Hardness
3.5 
Mineralpedia
View Sterryite
On Dakota Matrix
Previously Sold Sterryite
On Dakota Matrix
Other Available Sterryite
WebMineral
View Sterryite
Mindat
View Sterryite
Stibnite - 60998
Stibnite - 60998

Stibnite

#60998
Locality
Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy 
Formula
Sb2S3 
Availability
Available
Price
$35.00
Size
6 x 3.5 x 2.5 cm - Sm Cabinet 
Tagged
sulfide  

Divergent and long prismatic crystals to over 5cm.


Stibnite

Formula
Sb2S3 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Striated, Granular 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
lead gray, bluish lead gray, steel gray, black 
Streak
blackish gray 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness
2 
Mineralpedia
View Stibnite
On Dakota Matrix
Previously Sold Stibnite
On Dakota Matrix
Other Available Stibnite
WebMineral
View Stibnite
Mindat
View Stibnite
SOLD
Thermonatrite - BAC61126
Thermonatrite - BAC61126

Thermonatrite

#BAC61126
Locality
Owens lake, Inyo Co., California, United States 
Formula
Na2CO3·H2O 
Availability
Sold
Size
3.5 x 3.5 x 3 cm - Miniature 
Tagged
carbonate  

Colorless to white cubic crystals to 1cm. Very nice specimen for the species.


Thermonatrite

Formula
Na2CO3·H2O 
Crystal System
Orthorhombic 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Dull 
Color
colorless, grayish yellow, grayish, yellowish, white 
Streak
white 
Class
Orthorhombic - Pyramidal 
Fracture
Sectile 
Hardness
1 
Collection
William & Anne Cook Collection
On Dakota Matrix
Previously Sold Thermonatrite
On Dakota Matrix
Other Available Thermonatrite
WebMineral
View Thermonatrite
Mindat
View Thermonatrite

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