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Rare & Systematic

Friday, 08 March 2019 06:00 PM

Introducing the "Rare & Systematic" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including schmidite, schmiederite, siderite, and wildenauerite and more from places like Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany, Greystones quarry, Lezant, Cornwall, England, Tincroft No. 2 lode, South Crofty, Camborne, Cornwall, England.

Schmidite

with Phosphophyllite - #50418
Locality
Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany 
Formula
[Zn2(Fe3+,Mn2+)2Fe3+(PO4)3(OH)3(H2O)6]· 2H2
Availability
Sold
Size
1 x 1 x 0.5 cm - Thumbnail 
Tagged
phosphate , pegmatite mineral  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 
Special Info
Type & Only Locality 

Schmidite is a new IMA 2017 mineral. All of the rusty red bladed crystals are Schmidite and covers light green Phosphophylite. Schmidite is the only known occurence in the world. The specimen was obtaqined from Dr. Jaroslav Hrysl.


Special Info
XRD Confirmed
Special Info
EDS Confirmed
Special Info
Type & Only Locality

Schmiederite

#50367
Locality
Greystones quarry, Lezant, Cornwall, England 
Formula
Cu2Pb2(Se4+O3)(Se6+O4)(OH)4 
Availability
Sold
Size
5.5 x 5 x 4 cm - Sm Cabinet 
Tagged
copper , selenium  

Vuggy Quartz matrix with alot of vugs lined with blue, fibrous Schmiederite. 


Schmiederite

Formula
Cu2Pb2(Se4+O3)(Se6+O4)(OH)4 
Crystal System
Monoclinic 
Color
blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Hardness

Siderite

#50340
Locality
Tincroft No. 2 lode, South Crofty, Camborne, Cornwall, England 
Formula
FeCO3 
Availability
Sold
Size
10.5 x 6 x 2 cm - Cabinet 
Tagged
carbonate  

A plate of 1-2mm deep blood red Siderite crystals from this famous Cornish locality. A hand-written label shows a date of 1987, I assume this is when it was collected. (Prov. tab).


Siderite

Formula
FeCO3 
Crystal System
Trigonal 
Crystal Habit
Tabular, Massive, Botryoidal 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
yellowish brown, brown, gray, yellowish gray, greenish gray 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
3.5 
Mineralpedia
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Previously Sold Siderite
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Other Available Siderite
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Mindat
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Wildenauerite

with zincian Rockbridgeite - #50443
Locality
Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany 
Formula
Zn(Fe3+,Mn2+)2MnFe3+(PO4)3(OH)3(H2O)6·2H2
Availability
Sold
Size
1 x 1 x 1 cm - Thumbnail 
Tagged
phosphate  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 
Special Info
Type & Only Locality 

Wildenauerite is a new IMA mineral from 2017 and publication is pending according to Mindat. It is the orange platy crystals and appears to be an alteration of Rockbridgeite with the addition of zinc. Excellent specimen, analyzed by Dr. Jaroslav Hrysl.


Special Info
XRD Confirmed
Special Info
EDS Confirmed
Special Info
Type & Only Locality

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