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Mixed Minerals

Sunday, 13 September 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 copper, elbaite, fluorite, and lawsonite and more from places like Ray mine, Pinal Co., Arizona, United States, Mesa Grande Mining dist., San Diego County, California, United States, Weardale, North Pennines, Co. Durham, England, Nancy Hanks mine, Unaweep Canyon, Mesa Co., Colorado, United States, Gold King mine, La Plata Co., Colorado, United States, and Reed Station, Tiburon Peninsula, Marin Co., California, United States.

Copper

with Silver - #WR54058
Locality
Ray mine, Pinal Co., Arizona, United States 
Formula
Cu 
Availability
Available
Price
$295.00
Size
14 x 7 x 2 cm - Cabinet 
Tagged
native element  

Superb arborescent Copper crystals composed of thousands of 1mm Copper crystals. On the Copper are good wire and compact Silver crystals


Copper

Formula
Cu 
Crystal System
Isometric 
Crystal Habit
Nodular, Arborescent 
Cleavage
None, None, None 
Luster
Metallic 
Color
brown, copper red, light pink, red 
Streak
rose 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
Willard L. Roberts Collection
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Elbaite

tourmaline - #WR54049
Locality
Mesa Grande Mining dist., San Diego County, California, United States 
Formula
Na(Al1.5Li1.5)Al6(BO3)3Si6O18(OH)4 
Availability
Available
Price
$350.00
Size
4.5 x 1.5 x 1.2 cm - Miniature 
Tagged
pegmatite mineral  

Red, striated, crystal with pyramidal termination. Good piece, solid color.


Elbaite

Formula
Na(Al1.5Li1.5)Al6(BO3)3Si6O18(OH)4 
Crystal System
Trigonal 
Crystal Habit
Striated, Prismatic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
blue, colorless, green, yellow, white 
Streak
white 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Sub Conchoidal 
Hardness
7.5 
Collection
Willard L. Roberts Collection
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Fluorite

#43792
Locality
Weardale, North Pennines, Co. Durham, England 
Formula
CaF2 
Availability
Available
Price
$75.00
Size
9 x 4.5 x 3.5 cm - Sm Cabinet 
Special Info
Fluorescent 

Light purple cubic crystals from 8 to 33mm with vivid blue fluorescence as see.


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
Special Info
Fluorescent
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Fluorite

with Quartz (amethyst) - #AH54059
Locality
Nancy Hanks mine, Unaweep Canyon, Mesa Co., Colorado, United States 
Formula
CaF2 
Availability
Available
Price
$85.00
Size
6.5 x 5.5 x 4 cm - Sm Cabinet 

This is one of the better Colorado localities for green Fluorite which occurs with amethyst. 


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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Fluorite

#AH54066
Locality
Gold King mine, La Plata Co., Colorado, United States 
Formula
CaF2 
Availability
Sold
Size
8 x 5 x 4 cm - Sm Cabinet 

The piece was collected in 1961 by Arnold Hampson. The Fluorite is a light purple with what lookd like spheroidal crystals but are actually extremely complex cubic forms of 1-2 and 3 orders (I guess).


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
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Lawsonite

#54044
Locality
Reed Station, Tiburon Peninsula, Marin Co., California, United States 
Formula
CaAl2Si2O7(OH)2·H2
Availability
Sold
Size
7 x 4.5 x 4 cm - Sm Cabinet 

Blue partial crystal sections of this rare metamorphic mineral to over 1cm. Rich piece.


Lawsonite

Formula
CaAl2Si2O7(OH)2·H2
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Tabular 
Cleavage
Perfect, Perfect, Poor 
Luster
Vitreous - Greasy 
Color
colorless, white, gray, blue, pinkish 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Uneven 
Hardness
7.5 
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