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Mixed Minerals

Friday, 31 January 2020 10:00 AM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including chabazite, chloroxiphite, crocoite, fluorite, pyrite, and sphalerite and more from places like Solenice, Stredocesky Kraj, Bohemia, Czech Republic, Mendip Hills, Somerset, England, Red Lead mine, Dundas, Tasmania, Australia, Rock Candy mine, Greenwood, British Columbia, Canada, Ambasaguas #1 mine, Muro de Aguas, La Rioja, Spain, and Lengenbach quarry, Binn Valley, Wallis, Switzerland.

Chabazite

#AH52257
Locality
Solenice, Stredocesky Kraj, Bohemia, Czech Republic 
Formula
Ca(Si4Al2)O12ยท6H2
Availability
Available
Price
$25.00
Size
4.5 x 3.5 x 1.3 cm - Miniature 

White pseudo cubic crystals to 2.5mm.


Chabazite

Collection
Arnold G Hampson Collection

Chloroxiphite

in Mendipite - #PD33013
Locality
Mendip Hills, Somerset, England 
Formula
Pb3CuO2Cl2(OH)2 
Availability
Sold
Size
6.5 x 3 x 4 cm - Sm Cabinet 
Tagged
copper  

Hard to see, but there are thin dark green plates in the matrix to about 3mm.


Chloroxiphite

Formula
Pb3CuO2Cl2(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Tabular 
Cleavage
Perfect, Distinct, None 
Luster
Adamantine - Resinous 
Color
dull olive green, pistachio green 
Streak
light yellow green 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2.5 
Collection
Don Phillips Collection

Crocoite

#AH52179
Locality
Red Lead mine, Dundas, Tasmania, Australia 
Formula
PbCrO4 
Availability
Available
Price
$40.00
Size
3 x 1.6 x 1.7 cm - Thumbnail 

Brilliant red cluster of fine prismatic crystals, most all of which are nicely terminated ( a novelty in itself).


Crocoite

Formula
PbCrO4 
Crystal System
Monoclinic 
Crystal Habit
Crystalline - Coarse, Massive - Granular, Acicular 
Cleavage
Distinct, Indistinct, Indistinct 
Luster
Adamantine 
Color
yellow, orange, red, red orange 
Streak
yellowish orange 
Class
Monoclinic - Prismatic 
Fracture
Sectile 
Hardness
2.5-3 
Collection
Arnold G Hampson Collection
Mineralpedia
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Previously Sold Crocoite
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Fluorite

#AH52156
Locality
Rock Candy mine, Greenwood, British Columbia, Canada 
Formula
CaF2 
Availability
Available
Price
$35.00
Size
6 x 4.5 x 3 cm - Sm Cabinet 

The color is much better in person with green throughout, not zoned like the photos show. The luster is subdued by tiny growth hillocks all over the octahedral faces. 


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
Arnold G Hampson Collection
Mineralpedia
View Fluorite
On Dakota Matrix
Previously Sold Fluorite
On Dakota Matrix
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Mindat
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Pyrite

#AH52248
Locality
Ambasaguas #1 mine, Muro de Aguas, La Rioja, Spain 
Formula
FeS2 
Availability
Available
Price
$40.00
Size
2.2 x 2.5 x 3.0 cm - Thumbnail 
Tagged
sulfide  

Single Pyritohedron to 2.3cm.


Pyrite

Formula
FeS2 
Crystal System
Isometric 
Crystal Habit
Striated, Druse, Stalactitic 
Cleavage
Poor, Poor, None 
Luster
Metallic 
Color
pale brass yellow 
Streak
greenish black 
Class
Isometric - Diploidal 
Fracture
Conchoidal 
Hardness
6.5 
Collection
Arnold G Hampson Collection
Mineralpedia
View Pyrite
On Dakota Matrix
Previously Sold Pyrite
On Dakota Matrix
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Mindat
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Sphalerite

#AH52180
Locality
Lengenbach quarry, Binn Valley, Wallis, Switzerland 
Formula
ZnS 
Availability
Available
Price
$45.00
Size
5 x 4.5 x 3.5 cm - Miniature 
Tagged
sulfide  

A fantastic, gemmy, golden 7mm Sphalerite crystal with euhedral forms nicely perched on marble matrix with other sulfides. 


Sphalerite

Formula
ZnS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Granular, Colloform 
Cleavage
Perfect, Perfect, Perfect 
Luster
Resinous - Greasy 
Color
brown, yellow, red, green, black 
Streak
brownish white 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
3.5-4 
Collection
Arnold G Hampson Collection

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