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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, cupromolybdite, dolerophanite, and donpeacorite and more from places like Kamariza mine, Laurium, Greece, Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, United States, Tolbachik Volcano, Kamchatka, Russia, and ZCA #4 mine, Balmat, St. Lawrence Co., New York, 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
View Augite
On Dakota Matrix
Previously Sold Augite
On Dakota Matrix
Other Available Augite
WebMineral
View Augite
Mindat
View Augite

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
SOLD
Cupromolybdite - 52392
Cupromolybdite - 52392

Cupromolybdite

#52392
Locality
Tolbachik Volcano, Kamchatka, Russia 
Formula
Cu3O(MoO4)2 
Availability
Sold
Size
1 x 1 x 1 cm - Thumbnail 
Tagged
copper  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 
Special Info
Type & Only Locality 
Special Info
Author's Material 

Tiny reddish glassy crystals less than 0.5mm in spongy "scoria" matrix from volcanic rock. There are numerous crystals in this matrix and can barely be seen in the photos. But basically all the red spots you see in the photos are Cupromolybdite.

Identified by Dr. Igor Pekov. This specimen is from the original material first used by the author to describe this mineral.

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


Cupromolybdite

Special Info
XRD Confirmed
Special Info
EDS Confirmed
Special Info
Type & Only Locality
Special Info
Author's Material

Dolerophanite

#44110
Locality
Tolbachik Volcano, Kamchatka, Russia 
Formula
Cu2OSO4 
Availability
Sold
Size
2.5 x 2 x 1.5 cm - Thumbnail 
Tagged
copper  

Dull, dark brown crystals to 1mm throughout matrix with green Euchlorine.


Dolerophanite

Formula
Cu2OSO4 
Crystal System
Monoclinic 
Cleavage
Perfect, None, None 
Luster
Sub Metallic 
Color
brown, black 
Streak
yellowish brown 
Class
Monoclinic - Prismatic 
Hardness

Donpeacorite

#55461
Locality
ZCA #4 mine, Balmat, St. Lawrence Co., New York, United States 
Formula
Mn2+MgSi2O6 
Availability
Sold
Size
3 x 3 x 1.5 cm - Thumbnail 

Rich specimen of orange Donpeacorite. I defer you to Łukasz Kruszewski 2018 photo and desription of this complex mineral on Mindat.


Donpeacorite

Formula
Mn2+MgSi2O6 
Crystal System
Orthorhombic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
yellow orange 
Class
Orthorhombic - Dipyramidal 
Hardness
5-6 

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