| Kozulite (TL) |
10.00EUR |
 |
| Tanohata mine (Japon) |
Stock : 8
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Description :
Black grains has red reflections |
Chemical formula :
Na Na2 Mn4 +2 (Fe+3,Al) Si8 O22 (OH)2 |
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| Bokite |
5.00EUR |
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| Monument 2 mine (USA) |
Stock : 4
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Description :
Small radiant aggregates of black rods with brown red.
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Chemical formula :
(Al,Fe+3)7 (V+5,V+4,Fe+3)40 O100 37H2O |
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| Objective for development multifocus |
10.00EUR |
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Stock : 6
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Description :
Photo objective low height and fine development to assemble and descend a sample under the bino and to allow a series of stereotypes multifocus (utilsation x-ray helicon or combinZ) |
Chemical formula :
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| Ferronigerite |
10.00EUR |
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| Seixoso (Portugal) |
Stock : 3
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Description :
Quadratic prisms brown pink in pegmatite |
Chemical formula :
Sn (Fe,Mg)2 Al8 O15 (OH) |
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| Ralstonite (TL) |
4.00EUR |
 |
| Ivigtut (Groenland) |
Stock : 7
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Description :
Octahedral colourless, white or brown on cryolite |
Chemical formula :
Nax Mgx Al2-x (F,OH)6 H2O |
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| Pachnolite (TL) |
4.00EUR |
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| Ivigtut (Groenland) |
Stock : 11
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Description :
Rods pointed, colourless with brown, isolated or in hedgehogs on Cryolite |
Chemical formula :
Na Ca Al F6 H2 O |
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| Cryolite (TL) |
4.00EUR |
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| Ivigtut (Groenland) |
Stock : 6
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Description :
Squat crystals in pseudos cubic; often with Ralstonite (octahedral) and Pachnolite (prisms, needles) |
Chemical formula :
Na3 Al F6 |
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| Hardystonite (TL) |
2.00EUR |
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| Franklin (USA) |
Stock : 10
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Description :
Strongly fluorescent in purple gray mass
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Chemical formula :
Ca2 Zn Si2 O7 |
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