mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
Checkout
0 item @ $0.00  
Home | My Cart | Login | Register

Recently Released New Additions

Rare Mineral Specimens

Sunday, 01 October 2023 06:00 PM

Introducing the "Rare Mineral Specimens" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including christofschäferite-(ce), cobaltlotharmeyerite, glaucocerinite, labuntsovite-fe, and rammelsbergite and more from places like Wingertsberg, Eifel Volcanic Fields, Germany, Wiesser Hirsch, Schneeberg, Saxony, Germany, Hilarion mine, Laurium dist., Attika, Greece, Demix quarry, Saint-Amable sill, Montérégie, Quebec, Canada, and Hammerberg, Schlema, Saxony, Germany.

Christofschäferite-(Ce) - BAC62508
Christofschäferite-(Ce) - BAC62508

Christofschäferite-(Ce)

#BAC62508
Locality
Wingertsberg, Eifel Volcanic Fields, Germany 
Formula
Ce3CaMnTiFe(3+)Ti2(Si2O7)2O8 
Availability
Available
Price
$95.00
Size
0.3 x 0.3 x 0.2 cm - Thumbnail 
Tagged
REE mineral  
Special Info
Type Locality 

Jet black like glossy coal in mal-formed crystals not like the nice Mindat photos. Ex. Dr. Jaroslav Hyrsl specimen. It is a two-locality mineral, this being the type.


Collection
William & Anne Cook Collection
Special Info
Type Locality
On Dakota Matrix
Previously Sold Christofschäferite-(Ce)
On Dakota Matrix
Other Available Christofschäferite-(Ce)
WebMineral
View Christofschäferite-(Ce)
Mindat
View Christofschäferite-(Ce)
Cobaltlotharmeyerite - BAC62507
Cobaltlotharmeyerite - BAC62507

Cobaltlotharmeyerite

#BAC62507
Locality
Wiesser Hirsch, Schneeberg, Saxony, Germany 
Formula
CaCo2(AsO4)2·2H2O 
Availability
Available
Price
$85.00
Size
1.5 x 1.5 x 0.8 cm - Thumbnail 

Rusty brownish red acicular carpet of rare Cobaltlotharmeyerite with manganoan Adamite. Ex. Georg Gebhard specimen.


Cobaltlotharmeyerite

Formula
CaCo2(AsO4)2·2H2O 
Crystal System
Monoclinic 
Crystal Habit
Aggregates, Fan Shaped, Lath 
Cleavage
None, None, None 
Luster
Vitreous - Adamantine 
Color
brown 
Streak
light brown 
Class
Monoclinic - Prismatic 
Hardness
4.5 
Collection
William & Anne Cook Collection
Mineralpedia
View Cobaltlotharmeyerite
On Dakota Matrix
Previously Sold Cobaltlotharmeyerite
On Dakota Matrix
Other Available Cobaltlotharmeyerite
WebMineral
View Cobaltlotharmeyerite
Mindat
View Cobaltlotharmeyerite
SOLD
Glaucocerinite - 62505
Glaucocerinite - 62505

Glaucocerinite

#62505
Locality
Hilarion mine, Laurium dist., Attika, Greece 
Formula
Zn1-xAlx(SO4)x/2(OH)2·nH2O 
Availability
Sold
Size
6 x 4 x 1.6 cm - Sm Cabinet 

Bluish green botryoidal crystals covering face. Excellent piece hardly available these days.


Glaucocerinite

Formula
Zn1-xAlx(SO4)x/2(OH)2·nH2O 
Crystal System
Trigonal 
Crystal Habit
Aggregates, Nodular, Radial 
Cleavage
Perfect, None, None 
Luster
Waxy 
Color
white, sky blue, gray, greenish, brownish 
Streak
bluish white 
Class
Trigonal 
Hardness
1 
Collection
Chet S. Lemanski, Jr. Collection
Mineralpedia
View Glaucocerinite
On Dakota Matrix
Previously Sold Glaucocerinite
On Dakota Matrix
Other Available Glaucocerinite
WebMineral
View Glaucocerinite
Mindat
View Glaucocerinite
Labuntsovite-Fe - 62479
Labuntsovite-Fe - 62479

Labuntsovite-Fe

#62479
Locality
Demix quarry, Saint-Amable sill, Montérégie, Quebec, Canada 
Formula
Na4K4Fe2+2Ti8(Si4O12)4(O,OH)8·10-12H2O 
Availability
Available
Price
$75.00
Size
2.5 x 2 x 1.5 cm - Thumbnail 

Bright orange, tiny 1mm and less, crystals.


Labuntsovite-Fe

Formula
Na4K4Fe2+2Ti8(Si4O12)4(O,OH)8·10-12H2O 
Crystal System
Monoclinic 
Crystal Habit
Anhedral Grains 
Luster
Vitreous (Glassy) 
Color
orange 
Class
Monoclinic - Prismatic 
Hardness
5 
Collection
William & Anne Cook Collection
On Dakota Matrix
Previously Sold Labuntsovite-Fe
On Dakota Matrix
Other Available Labuntsovite-Fe
WebMineral
View Labuntsovite-Fe
Mindat
View Labuntsovite-Fe
Rammelsbergite - BAC62522
Rammelsbergite - BAC62522

Rammelsbergite

ps after Silver - #BAC62522
Locality
Hammerberg, Schlema, Saxony, Germany 
Formula
NiAs2 
Availability
Available
Price
$275.00
Size
5.5 x 2.5 x 2.8 cm - Sm Cabinet 
Tagged
nickel  

Superb specimen of "herringbone" habit of formerly Silver crystals replaced by Rammelsbergite. A classic example and chise specimen. Click her to see a definition of "herringbone" habit. 


Rammelsbergite

Formula
NiAs2 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Radial, Massive - Granular 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
tin white, reddish white 
Streak
grayish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
5.5 
Collection
William & Anne Cook Collection
On Dakota Matrix
Previously Sold Rammelsbergite
On Dakota Matrix
Other Available Rammelsbergite
WebMineral
View Rammelsbergite
Mindat
View Rammelsbergite

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2023 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map