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Mixed Minerals

Friday, 03 July 2020 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including descloizite, enargite, fluorite, galena, gianellaite, and hopeite and more from places like Whale Mine, Goodsprings dist., Clark Co., Nevada, United States, Butte dist., Silver Bow Co., Montana, United States, Wildcat Mountain, Tooele Co., Utah, United States, Camp Bird mine, Ouray Co., Colorado, United States, Mariposa mine, Terlingua dist., Brewster Co., Texas, United States, and Kabwe mine, Broken Hill, Kabwe dist., Central Province, Zambia.

Descloizite

(cuprian) - #WR53655
Locality
Whale Mine, Goodsprings dist., Clark Co., Nevada, United States 
Formula
PbZnVO4(OH) 
Availability
Available
Price
$45.00
Size
6 x 3.5 x 3.5 cm - Sm Cabinet 
Tagged
vanadium  

Dark, almost black to yellowish-green black, excellent micro crystals.


Descloizite

Formula
PbZnVO4(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Plumose, Tabular, Encrustations 
Cleavage
None, None, None 
Luster
Greasy (Oily) 
Color
dark brownish black, dark reddish brown, orange red, reddish brown, black 
Streak
light brownish green 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
3.5 
Collection
Willard L. Roberts Collection

Enargite

with Pyrite - #BC52703
Locality
Butte dist., Silver Bow Co., Montana, United States 
Formula
Cu3AsS4 
Availability
Sold
Size
13 x 8 x 6 cm - Cabinet 
Tagged
sulfide , copper  

Museum specimen just loaded with splendid prismatic crystals of Enargite to 2cm. This is a fine specimen with some of the better Enargite crystals I have seen. Of course the locality is highly desireable. Both sides are covered with crystals.


Enargite

Formula
Cu3AsS4 
Crystal System
Orthorhombic 
Crystal Habit
Euhedral Crystals, Massive - Granular, Prismatic 
Cleavage
Perfect, Distinct, Distinct 
Luster
Metallic 
Color
steel gray, blackish gray, violet black 
Streak
black 
Class
Orthorhombic - Pyramidal 
Fracture
Uneven 
Hardness
Collection
Barbara Cureton Collection
Mineralpedia
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Previously Sold Enargite
On Dakota Matrix
Other Available Enargite
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Fluorite

#WR53667
Locality
Wildcat Mountain, Tooele Co., Utah, United States 
Formula
CaF2 
Availability
Sold
Size
8.5 x 5 x 5 cm - Sm Cabinet 

Cubic crystals of Fluorite from 2 to 5mm. Off-beat locality.


Fluorite

Formula
CaF2 
Crystal System
Isometric 
Crystal Habit
Crystalline - Coarse, Massive - Granular, Disseminated 
Cleavage
Three perfect, octahedral cleavages. 
Luster
Vitreous (Glassy) 
Color
purple, clear, yellow, green, red, blue 
Streak
white 
Geological Setting
Occurs in a wide range of geologic environments including low temperature Missississippi Valley lead-zinc deposits, hydrothermal gold deposits, Alpine cleft metamorphic environments  
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
Collection
Willard L. Roberts Collection
Mineralpedia
View Fluorite
On Dakota Matrix
Previously Sold Fluorite
On Dakota Matrix
Other Available Fluorite
WebMineral
View Fluorite
Mindat
View Fluorite

Galena

with Sphalerite & Pyrite - #WR53664
Locality
Camp Bird mine, Ouray Co., Colorado, United States 
Formula
PbS 
Availability
Sold
Size
13 x 8 x 2.5 cm - Cabinet 
Tagged
sulfide  

Ore grade specimen of mostly Siderite with sulfides.


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 
Mineralpedia
View Galena
On Dakota Matrix
Previously Sold Galena
On Dakota Matrix
Other Available Galena
WebMineral
View Galena
Mindat
View Galena

Gianellaite

#53674
Locality
Mariposa mine, Terlingua dist., Brewster Co., Texas, United States 
Formula
Hg4SO4N2 
Availability
Sold
Size
4.5 x 2.5 x 1.5 cm - Miniature 
Special Info
XRD Confirmed 
Special Info
Raman 

A fine specimen with several really nice waxy yellow crystals with isometric forms and forms. 


Gianellaite

Formula
Hg4SO4N2 
Crystal System
Isometric 
Color
yellow, straw yellow 
Streak
light yellow 
Class
Isometric - Hextetrahedral 
Hardness
Special Info
XRD Confirmed
Special Info
Raman

Hopeite

#BC52712
Locality
Kabwe mine, Broken Hill, Kabwe dist., Central Province, Zambia 
Formula
Zn3(PO4)2·4H2
Availability
Sold
Size
17 x 6 x 4 cm - Cabinet 
Tagged
phosphate  

Large specimen totally covered by orange to dark orange-red Hopeite crystals from 1-2mm. This is an excellent and fascinating specimen from the Barbera Cureton Collection.


Hopeite

Formula
Zn3(PO4)2·4H2
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Reniform, Encrustations 
Cleavage
Perfect, Good, Poor 
Luster
Vitreous (Glassy) 
Color
colorless, gray white, yellow, white, light yellow 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
Collection
Barbara Cureton Collection
Mineralpedia
View Hopeite
On Dakota Matrix
Previously Sold Hopeite
On Dakota Matrix
Other Available Hopeite
WebMineral
View Hopeite
Mindat
View Hopeite

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