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Rare Mineral Species

Friday, 09 August 2019 06:30 PM

Introducing the "Rare Mineral Species" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including sulvanite, terlinguaite, tintinaite, uvarovite, vinogradovite, and wickmanite and more from places like Edelweiss mine, Burra, Mt Lofty Ranges, South Australia, Australia, Terlingua dist., Brewster Co., Texas, United States, Mária mine, Rožňava, Rožňava Co., Košice, Slovakia, Jacksonville dist., Mother Lode Belt, Tuolumne Co., California, Koashva Mt., Khibiny Massif, Kola Peninsula, Russia, and San Mart�n mine, Sombrerete, Zacatecas, Mexico Zacatecas, Mexico.

Sulvanite

#PD51095
Locality
Edelweiss mine, Burra, Mt Lofty Ranges, South Australia, Australia 
Formula
Cu3VS4 
Availability
Sold
Size
3 x 2 x 1.3 cm - Thumbnail 
Tagged
sulfide , copper , vanadium  

Sulfide mineral with vanadium, massive, with goldish reflections and copper alterations. Ex. E.M. Gunnel colletion.


Sulvanite

Formula
Cu3VS4 
Crystal System
Isometric 
Crystal Habit
Massive, Crystalline - Coarse 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
bronze, steel gray 
Streak
black 
Class
Isometric - Hextetrahedral 
Hardness
3.5 
Collection
Don Phillips Collection
Mineralpedia
View Sulvanite
On Dakota Matrix
Previously Sold Sulvanite
On Dakota Matrix
Other Available Sulvanite
WebMineral
View Sulvanite
Mindat
View Sulvanite

Terlinguaite

with Montroydite - #50436
Locality
Terlingua dist., Brewster Co., Texas, United States 
Formula
Hg2OCl 
Availability
Sold
Size
3 x 2 x 2.5 cm - Thumbnail 

Waxy green to yellow formless crystals with fair coverage with grains and coatings of Montroydite (red), but no crystals.


Terlinguaite

Formula
Hg2OCl 
Crystal System
Monoclinic 
Crystal Habit
Striated, Prismatic 
Cleavage
Perfect, None, None 
Luster
Adamantine 
Color
yellow, greenish yellow, brown, olive green 
Streak
light yellow 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2-3 

Tintinaite

#50414
Locality
Mária mine, Rožňava, Rožňava Co., Košice, Slovakia 
Formula
Pb10Cu2Sb16S35 
Availability
Sold
Size
1.5 x 1 x 1.3 cm - Thumbnail 
Tagged
sulfide , copper  

Silvery and iridescent thin ribbon-like crystals on Quartz to 1mm.


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 
SOLD
Uvarovite - 49084
Uvarovite - 49084

Uvarovite

with Magnesiochromite - #49084
Locality
Jacksonville dist., Mother Lode Belt, Tuolumne Co., California 
Formula
Ca3Cr2(SiO4)3 
Availability
Sold
Size
4 x 2.5 x 1.5 cm - Miniature 

Green dodecahedral crystals less than 0.75mm with chromium clinochlore (purple) on Magnesiochromite matrix.


Uvarovite

Formula
Ca3Cr2(SiO4)3 
Crystal System
Isometric 
Crystal Habit
Crystalline - Fine, Crystalline - Fine, Lamellar 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
green 
Streak
white 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
6.5-7 
Mineralpedia
View Uvarovite
On Dakota Matrix
Previously Sold Uvarovite
On Dakota Matrix
Other Available Uvarovite
WebMineral
View Uvarovite
Mindat
View Uvarovite
SOLD
Vinogradovite - 46485
Vinogradovite - 46485

Vinogradovite

#46485
Locality
Koashva Mt., Khibiny Massif, Kola Peninsula, Russia 
Formula
(Na,Ca,K)5(Ti,Nb)4(Si6BeAl)O26·3H2
Availability
Sold
Size
4 x 2 x 2.2 cm - Miniature 

White fibrous crystals to 2mm. Very rich specimen.


Vinogradovite

Formula
(Na,Ca,K)5(Ti,Nb)4(Si6BeAl)O26·3H2
Crystal System
Monoclinic 
Crystal Habit
Pseudo Orthorhombic, Prismatic, Bladed 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness

Wickmanite

on Quartz - #50771
Locality
San Mart�n mine, Sombrerete, Zacatecas, Mexico Zacatecas, Mexico 
Formula
Mn2+Sn4+(OH)6 
Availability
Sold
Size
9 x 7 x 3.5 cm - Sm Cabinet 
Tagged
tin  

Hundreds of tiny yellow crystals about 0.75mm sprinkle all over the cluster of Quatz crystals. It's actually a very nice specimen for just Quartz alone. Also a bit of colorless Fluorite to 2mm in association.


Wickmanite

Formula
Mn2+Sn4+(OH)6 
Crystal System
Isometric 
Crystal Habit
Octahedral Crystals 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
yellow, orange brown, yellow orange, colorless 
Streak
white 
Class
Isometric - Hexoctahedral 
Hardness
3-4 

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