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Rare & Systematic

Friday, 08 March 2019 06:00 PM

Introducing the "Rare & Systematic" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including stibnite, suredaite, tintinaite, umangite, and wildenauerite and more from places like Wheal Boys, Port Isaac, St. Endellion, Cornwall, England, Pirquitas Ag-Sn Deposit, Rinconada Dept., Jujuy, Argentina, Dlha, Dolina, Slovakia, Eldorado Mining & Refining Ltd., Beaverlodge Lake area, Saskatchewan, Canada, and Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany.

Stibnite

#50236
Locality
Wheal Boys, Port Isaac, St. Endellion, Cornwall, England 
Formula
Sb2S3 
Availability
Sold
Size
7 x 5 x 5 cm - Sm Cabinet 
Tagged
sulfide  

Silvery plates of Stibite to 1.5cm in Quartz matrix. An important locality for Stibnite.


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
Mineralpedia
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Previously Sold Stibnite
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Mindat
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Stibnite

with Andorite - #50372
Locality
Pirquitas Ag-Sn Deposit, Rinconada Dept., Jujuy, Argentina 
Formula
Sb2S3 
Availability
Sold
Size
8 x 6 x 3.5 cm - Sm Cabinet 
Tagged
sulfide  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 

This specimen originated with Dr. Werner Paar a professor at the University of Salzberg. Paar analyzed all of his specimen so there is never any doubt of identification. This specimen is a sulfide host matrix with large open vugs lined with tiny 1mm and less, tabular Andorite crystals with characteristic striations. Vugs on the one side are lined with 2-3mm Stibnite crystals. See prov. tab for University of Salzburg label.


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
Special Info
XRD Confirmed
Special Info
EDS Confirmed
Mineralpedia
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On Dakota Matrix
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On Dakota Matrix
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Mindat
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Suredaite

with Sphalerite - #50431
Locality
Pirquitas Ag-Sn Deposit, Rinconada Dept., Jujuy, Argentina 
Formula
PbSnS3 
Availability
Sold
Size
7 x 5.5 x 4 cm - Sm Cabinet 
Tagged
sulfide , tin  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 
Special Info
Type & Only Locality 

All of the dull steely grey embedded crystals is Suredaite, a very rare tin sulfide. Suredaite is found only at this locality and the mine is probably idle so no further specimens are likely. It is from Dr. Werner Paar's collection. Very rich specimen with a few open vugs showing some free-standing crystals.


Suredaite

Formula
PbSnS3 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Prismatic 
Cleavage
Perfect, Perfect, Perfect 
Luster
Metallic 
Color
grayish black 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Hardness
2.5-3 
Special Info
XRD Confirmed
Special Info
EDS Confirmed
Special Info
Type & Only Locality
Mineralpedia
View Suredaite
On Dakota Matrix
Previously Sold Suredaite
On Dakota Matrix
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Mindat
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SOLD
Tintinaite - 50446
Tintinaite - 50446

Tintinaite

#50446
Locality
Dlha, Dolina, Slovakia 
Formula
Pb10Cu2Sb16S35 
Availability
Sold
Size
3.5 x 2 x 1.5 cm - Miniature 
Tagged
sulfide , copper  
Special Info
EDS Confirmed 

Dull silvery grains embedded and exposed in Quartz matrix. From the stock of Dr. Jaroslav Hrysl. Fairly rare. 


Tintinaite

Formula
Pb10Cu2Sb16S35 
Crystal System
Orthorhombic 
Crystal Habit
Bladed 
Cleavage
Distinct, None, None 
Luster
Metallic 
Color
lead gray 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Hardness
2.5-3 
Special Info
EDS Confirmed

Umangite

with polished microprobe disc. - #50366
Locality
Eldorado Mining & Refining Ltd., Beaverlodge Lake area, Saskatchewan, Canada 
Formula
Cu3Se2 
Availability
Sold
Size
2.5 x 2.5 x 2 cm - Thumbnail 
Tagged
copper , selenium  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 

A unique locality for this rare selenium sulfide. The specimen is 2.5cm and sawed on one side for positive identification in the epoxy disc used for EDS/microprobe work. The Umangite is the dark grey or sooty black mass . Ex. Art Segoralli (sp?).


Umangite

Formula
Cu3Se2 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular 
Cleavage
Distinct, Distinct, None 
Luster
Metallic 
Color
blue black, brownish black, red violet 
Streak
black 
Class
Orthorhombic - Disphenoidal 
Fracture
Uneven 
Hardness
Special Info
XRD Confirmed
Special Info
EDS Confirmed
On Dakota Matrix
Previously Sold Umangite
On Dakota Matrix
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Mindat
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Wildenauerite

with zincian Rockbridgeite - #50443
Locality
Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany 
Formula
Zn(Fe3+,Mn2+)2MnFe3+(PO4)3(OH)3(H2O)6ยท2H2
Availability
Sold
Size
1 x 1 x 1 cm - Thumbnail 
Tagged
phosphate  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 
Special Info
Type & Only Locality 

Wildenauerite is a new IMA mineral from 2017 and publication is pending according to Mindat. It is the orange platy crystals and appears to be an alteration of Rockbridgeite with the addition of zinc. Excellent specimen, analyzed by Dr. Jaroslav Hrysl.


Special Info
XRD Confirmed
Special Info
EDS Confirmed
Special Info
Type & Only Locality

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