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Mixed Minerals

Sunday, 27 December 2020 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including fluorite, microlite group - pyrochlore supergroup, and zircon and more from places like Mina Ojuela, Mapimi, Durango, Mexico, Mont Saint-Hilaire, Rouville Co., Quebec, Canada.

Fluorite

with Calcite - #AH54903
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
CaF2 
Availability
Available
Price
$60.00
Size
10 x 8 x 5 cm - Cabinet 

Very faint purple Fluorite crystals to 4cm on edge with an interesting silky luster from countless parallel overgrowths. On the right side is a group of Calcite crystals with rhombic crystals to 5mm.


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
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Microlite Group - Pyrochlore Supergroup

#DC54852
Locality
Mont Saint-Hilaire, Rouville Co., Quebec, Canada 
Formula
A2-mD2X6-w Z1-n 
Availability
Available
Price
$40.00
Size
3.5 x 2.5 x 3 cm - Miniature 

Dozens of micro (less than 0.25mm) Microlite crystals clinging for life on the Aegerine spray in the photo. Really cool under the scope.


Collection
Don Cooke Collection

Zircon

on Siderite - #DC54857
Locality
Mont Saint-Hilaire, Rouville Co., Quebec, Canada 
Formula
ZrSiO4 
Availability
Available
Price
$25.00
Size
4 x 3 x 2.5 cm - Miniature 

A homely specimen only a mother would love, unless you like large ugly Siderite rhombs and yellow Zircon crystals to about 1mm.


Zircon

Formula
ZrSiO4 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Tabular, Crystalline - Fine 
Cleavage
Indistinct, None, None 
Luster
Adamantine 
Color
brown, reddish brown, colorless, gray, green 
Streak
white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Uneven 
Hardness
7.5 
Collection
Don Cooke Collection
Mineralpedia
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On Dakota Matrix
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On Dakota Matrix
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Mindat
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