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Rare Minerals for Sale

Sunday, 02 February 2025 05:00 PM

Introducing the "Rare Minerals for Sale" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including ktenasite, lovdarite, moraesite, roscherite, schneebergite, and sideronatrite and more from places like Santa Rosa mine, Inyo Co., California, United States, Yubileinaya peg., Karnasurt Mt., Lovozero Massif, Kola Pen., Russia, Itinga, Minas Gerais, Brazil, Tip Top mine, Custer Co., South Dakota, United States, Roter Berg, Schneeberg dist., Erzgebirge, Saxony, Germany, and Torrecillas mine, Salar Grande, Iquique, Tarapacá, Chile.

Ktenasite

with Gypsum - #65369
Locality
Santa Rosa mine, Inyo Co., California, United States 
Formula
(Cu,Zn)5(SO4)2(OH)6·6H2
Availability
Sold
Size
Micromount 
Tagged
copper  

Bluish green groups composed of platy crystals.


Ktenasite

Formula
(Cu,Zn)5(SO4)2(OH)6·6H2
Crystal System
Monoclinic 
Crystal Habit
Tabular 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
blue, blue green, green, emerald green 
Streak
light green 
Class
Monoclinic - Prismatic 
Hardness
2-2.5 
Collection
John Dagenais Collection
Mineralpedia
View Ktenasite
On Dakota Matrix
Previously Sold Ktenasite
On Dakota Matrix
Other Available Ktenasite
WebMineral
View Ktenasite
Mindat
View Ktenasite

Lovdarite

#57796
Locality
Yubileinaya peg., Karnasurt Mt., Lovozero Massif, Kola Pen., Russia 
Formula
K2Na6Be4Si14O36·9H2
Availability
Available
Price
$55.00
Size
1.5 x 1 x 1 cm - Thumbnail 
Tagged
beryllium  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 

White acicular crystals to 1mm. Lovdarite is a very rare beryllium mineral found in just a few localities in the world. This piece was identified byr Dr. Igor Pekov.


Lovdarite

Formula
K2Na6Be4Si14O36·9H2
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Radial 
Cleavage
Distinct, Distinct, Distinct 
Luster
Vitreous (Glassy) 
Color
colorless, yellow, yellowish white, white 
Streak
white 
Class
Orthorhombic - Pyramidal 
Hardness
5-6 
Special Info
XRD Confirmed
Special Info
EDS Confirmed
Mineralpedia
View Lovdarite
On Dakota Matrix
Previously Sold Lovdarite
On Dakota Matrix
Other Available Lovdarite
WebMineral
View Lovdarite
Mindat
View Lovdarite

Moraesite

#40407
Locality
Itinga, Minas Gerais, Brazil 
Formula
Be2PO4(OH)·4H2
Availability
Available
Price
$50.00
Size
1.5 x 1 x 1 cm - Thumbnail 
Tagged
phosphate , beryllium , pegmatite mineral  

A mass of snow white fibrous crystals.


Moraesite

Formula
Be2PO4(OH)·4H2
Crystal System
Monoclinic 
Crystal Habit
Spherical, Druse, Encrustations 
Cleavage
Perfect, None, None 
Color
white 
Streak
white 
Class
Monoclinic 
Hardness
Collection
Don Phillips Collection
Mineralpedia
View Moraesite
On Dakota Matrix
Previously Sold Moraesite
On Dakota Matrix
Other Available Moraesite
WebMineral
View Moraesite
Mindat
View Moraesite

Roscherite

with Hurlbutite - #JD65365
Locality
Tip Top mine, Custer Co., South Dakota, United States 
Formula
Ca2Mn2+5Be4(PO4)6(OH)4·6H2
Availability
Sold
Size
4 x 3 x 2 cm - Miniature 
Tagged
phosphate , beryllium , pegmatite mineral  

Lilac colored Roscherite crystals with tiny colorless spheroids of Hurlbutite on Beryl matrix.


Roscherite

Formula
Ca2Mn2+5Be4(PO4)6(OH)4·6H2
Crystal System
Triclinic 
Crystal Habit
Pistolitic 
Cleavage
Good, Distinct, None 
Color
light brown, dark brown, olive green, orange red, red 
Streak
light brown 
Class
Triclinic - Pinacoidal 
Hardness
4.5 
Collection
John Dagenais Collection

Schneebergite

#JD65370
Locality
Roter Berg, Schneeberg dist., Erzgebirge, Saxony, Germany 
Formula
BiCo2(AsO4)2(OH)·H2
Availability
Sold
Size
1.3 x 1.3 x 0.4 cm - Thumbnail 
Tagged
arsenate  

Rusty red acicular crystals throughout specimen.


Schneebergite

Formula
BiCo2(AsO4)2(OH)·H2
Crystal System
Monoclinic 
Crystal Habit
Microscopic Crystals, Tabular 
Cleavage
None, None, None 
Luster
Subadamantine 
Color
brown, beige 
Streak
pale brown 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
4-4.5 
Collection
John Dagenais Collection
SOLD
Sideronatrite - CL65382
Sideronatrite - CL65382

Sideronatrite

#CL65382
Locality
Torrecillas mine, Salar Grande, Iquique, Tarapacá, Chile 
Formula
Na2Fe3+(SO4)2(OH)·3H2
Availability
Sold
Size
2 x 1.5 x 1.5 cm - Thumbnail 

Golden straw colored compact fibrous crystals to 2mm.


Sideronatrite

Formula
Na2Fe3+(SO4)2(OH)·3H2
Crystal System
Orthorhombic 
Crystal Habit
Fibrous, Nodular, Massive 
Cleavage
Perfect, None, None 
Luster
Vitreous - Dull 
Color
yellow, yellow, yellow brown, pale orange 
Streak
pale yellow 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
1.5-2 

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