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Mixed Minerals

Friday, 14 August 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 fluorite, galena, marcasite, microcline, and millosevichite and more from places like Auglaize quarry, Junction, Paulding Co., Ohio, United States, Gold King mine, La Plata Co., Colorado, United States, Silent Friend mine, Animas Forks dist., San Juan Co., Colorado, United States, Santa Eulalia, Chihuahua, Mexico, Ten-Percenter mine, Crystal Peak dist., Teller Co., Colorado, United States, and Vulcano Island, Sicily, Italy.

Fluorite

#WR53885
Locality
Auglaize quarry, Junction, Paulding Co., Ohio, United States 
Formula
CaF2 
Availability
Sold
Size
8 x 7.5 x 4 cm - Sm Cabinet 

Flourite from the Auglaize quarry is some of the most unique crystals in the world. The Fluorite carries a beautiful goldish brown iridescence and luster. It is typical that specimens also have a few purple crystals like this specimen.


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
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Previously Sold Fluorite
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Other Available Fluorite
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Galena

with Baryte - #AH53897
Locality
Gold King mine, La Plata Co., Colorado, United States 
Formula
PbS 
Availability
Sold
Size
8 x 6.5 x 4 cm - Sm Cabinet 
Tagged
ore mineral , sulfide  

Ore specimen composed of 2-5mm Galena crystals embedded in Baryte matrix. Collected in 1961 by Hampson. 


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 
Collection
Arnold G Hampson Collection
Mineralpedia
View Galena
On Dakota Matrix
Previously Sold Galena
On Dakota Matrix
Other Available Galena
WebMineral
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Mindat
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SOLD
Galena - AH53903
Galena - AH53903

Galena

(argentiferous) - #AH53903
Locality
Silent Friend mine, Animas Forks dist., San Juan Co., Colorado, United States 
Formula
PbS 
Availability
Sold
Size
6.5 x 4 x 2 cm - Sm Cabinet 
Tagged
ore mineral , sulfide  

Granular Galena with a Silver component. 


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 
Collection
Arnold G Hampson Collection
Mineralpedia
View Galena
On Dakota Matrix
Previously Sold Galena
On Dakota Matrix
Other Available Galena
WebMineral
View Galena
Mindat
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Marcasite

on Calcite - #AH53854
Locality
Santa Eulalia, Chihuahua, Mexico 
Formula
FeS2 
Availability
Sold
Size
14 x 11 x 7 cm - Cabinet 
Tagged
sulfide  

Micro Marcasite crystals on preferential faces of the large Calcite specimen. Quite a handsome piece.


Marcasite

Formula
FeS2 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Stalactitic, Globular 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
bronze, light brass yellow, tin white 
Streak
gray brownish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
6-6.5 
Collection
Arnold G Hampson Collection
Mineralpedia
View Marcasite
On Dakota Matrix
Previously Sold Marcasite
On Dakota Matrix
Other Available Marcasite
WebMineral
View Marcasite
Mindat
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SOLD
Microcline - AH53893
Microcline - AH53893

Microcline

var. amazonite - #AH53893
Locality
Ten-Percenter mine, Crystal Peak dist., Teller Co., Colorado, United States 
Formula
KAlSi3O8 
Availability
Sold
Size
5 x 4 x 4 cm - Miniature 
Tagged
pegmatite mineral  

Single green Microcline crystal, terminated and associated with a large rosette of Albite.


Microcline

Formula
KAlSi3O8 
Crystal System
Triclinic 
Crystal Habit
Blocky, Crystalline - Coarse, Prismatic 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
bluish green, green, gray, grayish yellow, yellowish 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Uneven 
Hardness
Collection
Arnold G Hampson Collection
SOLD
Millosevichite - AH53907
Millosevichite - AH53907

Millosevichite

#AH53907
Locality
Vulcano Island, Sicily, Italy 
Formula
Al2(SO4)3 
Availability
Sold
Size
6 x 2 x 2 cm - Sm Cabinet 

Cool old vial of purple Millosevichite from the 1927 eruption. Obtained by Hampson in 1962 from Roberto Palumbo.


Millosevichite

Formula
Al2(SO4)3 
Crystal System
Trigonal 
Color
red, clear red, brick red 
Streak
red 
Class
Trigonal - Rhombohedral 
Hardness
1.5 
Collection
Arnold G Hampson Collection

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