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Mixed Minerals

Friday, 04 June 2021 05:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including annabergite, augite, avdoninite, baryte, bermanite, and bustamite and more from places like Kamariza mine, Laurium, Greece, Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, United States, Tolbachik Volcano, Kamchatka, Russia, Meikle mine, Elko Co., Nevada, United States, Kobokobo Pegmatite, Sud-Kivu, Democratic Republic of Congo, and Franklin, Sussex Co., New Jersey, United States.

Annabergite

#55919
Locality
Kamariza mine, Laurium, Greece 
Formula
Ni3(AsO4)2·8H2
Availability
Sold
Size
6 x 4 x 4.5 cm - Sm Cabinet 
Tagged
arsenate , nickel  

Bright green super thin crystals of Annabergite in little less than 1mm groups.


Annabergite

Formula
Ni3(AsO4)2·8H2
Crystal System
Monoclinic 
Crystal Habit
Earthy, Encrustations, Massive 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
apple green, greenish white, gray, yellow green, white 
Streak
light green 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness

Augite

#PD55912
Locality
Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, United States 
Formula
(Ca,Mg,Fe)2(Si,Al)2O6 
Availability
Sold
Size
6 x 4.5 x 3 cm - Sm Cabinet 

It's ugly but real. It is euhedral and terminated, so a nice specimen actually. Comes with a Gerstmann Franklin Mineral Museum tag.


Augite

Formula
(Ca,Mg,Fe)2(Si,Al)2O6 
Crystal System
Monoclinic 
Crystal Habit
Massive - Fibrous, Columnar, Granular 
Cleavage
Perfect, Indistinct, None 
Luster
Vitreous - Resinous 
Color
brown green, green, light brown, dark brown, black 
Streak
greenish gray 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
5-6.5 
Collection
Don Phillips Collection
Mineralpedia
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Avdoninite

#52387
Locality
Tolbachik Volcano, Kamchatka, Russia 
Formula
K2Cu5Cl8(OH)4·H2
Availability
Sold
Size
3.5 x 1.5 x 2 cm - Miniature 
Tagged
copper  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 
Special Info
Type & Only Locality 
Special Info
Author's Material 

Glassy bright emerald green crystals in vuggy scoria.  This is a good, rich specimen.

A relatively new mineral from 2013 described by Dr. Igor Pekov and others in 2005. The specimen is from Pekov and can be considered "Author's MatriaL".

the exact locality is: Yadovitaya fumarole, Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik volcano, Kamchatka Krai, Russia


Avdoninite

Formula
K2Cu5Cl8(OH)4·H2
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Druse, Tabular 
Luster
Vitreous (Glassy) 
Color
green 
Streak
pale green 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
Special Info
XRD Confirmed
Special Info
EDS Confirmed
Special Info
Type & Only Locality
Special Info
Author's Material

Baryte

#55917
Locality
Meikle mine, Elko Co., Nevada, United States 
Formula
BaSO4 
Availability
Sold
Size
6 x 5 x 3 cm - Sm Cabinet 

Glassy, golden Baryte crystals to 1.7cm. It's a fair, affordable specimen from a huge find last century. There is coverage on both sides.


Baryte

Formula
BaSO4 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Prismatic, Massive - Fibrous 
Cleavage
Perfect, Perfect, Imperfect 
Luster
Vitreous (Glassy) 
Color
white, yellowish white, grayish white, brownish white, dark brown 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
3-3.5 
Mineralpedia
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Bermanite

with Strengite - #BN55895
Locality
Kobokobo Pegmatite, Sud-Kivu, Democratic Republic of Congo 
Formula
Mn2+Mn3+2(PO4)2(OH)2·4H2
Availability
Sold
Size
6 x 5.5 x 3 cm - Sm Cabinet 
Tagged
phosphate , pegmatite mineral  

Fantastic colorful specimen. These are the largest Bermanite crystals I have see - to a whopping 1mm. The Strengite exhibits a nice lavendar color. The backside shows several thick tabular crystal plates of Columbite to 5cm long. Other phosphated are likely present.


Bermanite

Formula
Mn2+Mn3+2(PO4)2(OH)2·4H2
Crystal System
Monoclinic 
Cleavage
Perfect, Indistinct, None 
Luster
Vitreous - Resinous 
Color
light red, dark reddish brown 
Class
Monoclinic - Sphenoidal 
Fracture
Brittle 
Hardness
3.5 
Collection
Dr. Buford Nichols Collection
Mineralpedia
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Bustamite

#55905
Locality
Franklin, Sussex Co., New Jersey, United States 
Formula
CaMn2+Si2O6 
Availability
Sold
Size
12 x 10 x 4 cm - Cabinet 

Pink crystalline mass of Bustamite.


Bustamite

Formula
CaMn2+Si2O6 
Crystal System
Triclinic 
Cleavage
Perfect, Good, Good 
Luster
Vitreous (Glassy) 
Color
brown red, light pink, pink 
Streak
white 
Class
Triclinic - Pinacoidal 
Hardness
5.5-6.5 
Mineralpedia
View Bustamite
On Dakota Matrix
Previously Sold Bustamite
On Dakota Matrix
Other Available Bustamite
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Mindat
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