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0 item @ $0.00  

Mixed Minerals

Sunday, 24 May 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 beryl, chalcopyrite, chrysocolla, fergusonite-(y), fluorite, and herderite and more from places like Topaz Mountain, Thomas Range, Juab Co., Utah, United States, Picher, Tri-State Dist., Oklahoma, United States, 79 mine, Gila Co., Arizona, United States, Ruoutevare, Jokkmokk, Lappland, Sweden, Yaogangxian mine, Chenzhou, Hunan prov., China, and Fletcher mine, Groton, Grafton Co., New Hampshire, United States.

SOLD
Beryl - AH53353
Beryl - AH53353

Beryl

#AH53353
Locality
Topaz Mountain, Thomas Range, Juab Co., Utah, United States 
Formula
Be3Al2Si6O18 
Availability
Sold
Size
0.5 x 0.5 x 0.5 cm - Thumbnail 
Tagged
beryllium  

Murky red with whiteish tips in places. Hexagonal crystal.


Beryl

Formula
Be3Al2Si6O18 
Crystal System
Hexagonal 
Crystal Habit
Crystalline - Coarse, Prismatic, Columnar 
Cleavage
Imperfect, None, None 
Luster
Vitreous - Resinous 
Color
green, blue, yellow, colorless, pink 
Streak
white 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
7.5-8 
Collection
Arnold G Hampson Collection
Mineralpedia
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Previously Sold Beryl
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Chalcopyrite

on Dolomite - #53345
Locality
Picher, Tri-State Dist., Oklahoma, United States 
Formula
Cu1+Fe3+S2 
Availability
Sold
Size
5.5 x 4.5 x 3.5 cm - Sm Cabinet 
Tagged
sulfide , copper  

Excellent tetrahedral goldish crystals of Chalcopyrite to 6mm on Dolomite.


Chalcopyrite

Formula
Cu1+Fe3+S2 
Crystal System
Tetragonal 
Crystal Habit
Euhedral Crystals, Striated, Druse 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
brass yellow, honey yellow 
Streak
greenish black 
Class
Tetragonal - Scalenohedral 
Fracture
Brittle 
Hardness
3.5 

Chrysocolla

ps after Aurichalcite - #AH53218
Locality
79 mine, Gila Co., Arizona, United States 
Formula
(Cu,Al)2H2Si2O5(OH)4·nH2
Availability
Sold
Size
5 x 3 x 2.5 cm - Miniature 
Tagged
copper  

A stunning specimen with blades of former Aurichalcite replaced by Chrysocolla with spherical Rosasite. Really really fun to view under the scope.


Chrysocolla

Formula
(Cu,Al)2H2Si2O5(OH)4·nH2
Crystal System
Orthorhombic 
Crystal Habit
Botryoidal, Earthy, Stalactitic 
Cleavage
None, None, None 
Luster
Vitreous - Dull 
Color
green, bluish green, blue, blackish blue, brown 
Streak
light green 
Class
Orthorhombic 
Fracture
Brittle - Sectile 
Hardness
2.5-3.5 
Collection
Arnold G Hampson Collection

Fergusonite-(Y)

#39106
Locality
Ruoutevare, Jokkmokk, Lappland, Sweden 
Formula
YNbO4 
Availability
Sold
Size
6.5 x 4 x 2.5 cm - Sm Cabinet 
Tagged
REE mineral , pegmatite mineral  

This black bladed crystals running through pegmatite matrix.


Fergusonite-(Y)

Formula
YNbO4 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Metamict 
Cleavage
Indistinct, None, None 
Luster
Sub Metallic 
Color
black, black, brown, gray, yellow 
Streak
brown 
Class
Tetragonal - Dipyramidal 
Fracture
Sub Conchoidal 
Hardness
5.5-6 

Fluorite

with Wolframite & Arsenpyrite - #AH53316
Locality
Yaogangxian mine, Chenzhou, Hunan prov., China 
Formula
CaF2 
Availability
Available
Price
$40.00
Size
5 x 4.5 x 4 cm - Miniature 

Green from light to richer green and light purple Fluorite crystals to 2.2cm with 2cm Wolframite bladed crystals and 6mm Arsenopyrite crystals. 


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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On Dakota Matrix
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Mindat
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Herderite

on Quartz - #53341
Locality
Fletcher mine, Groton, Grafton Co., New Hampshire, United States 
Formula
CaBePO4
Availability
Sold
Size
5.5 x 2 x 2 cm - Sm Cabinet 
Tagged
phosphate , beryllium , pegmatite mineral  

A bit worn but these are yellow Herderite crystals to 6mm on Quartz.


Herderite

Formula
CaBePO4
Crystal System
Monoclinic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
white, yellowish white, greenish white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Sub Conchoidal 
Hardness
Mineralpedia
View Herderite
On Dakota Matrix
Previously Sold Herderite
On Dakota Matrix
Other Available Herderite
WebMineral
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Mindat
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