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Hilairite Labuntsovite-Mn & Neptunite

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MEX727560

Hilairite Labuntsovite-Mn & Neptunite

ex Ralf Wartha, Windhoek
Rare Mineral

Description Tabs

Description
Locality: 
Aris Quarry, Windhoek Rural, Khomas Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 1.5 × 2 cm
Weight: 
5.00gr
Description

A nice group of brown hilairite crystals with large labuntsovite manganese crystals and other minerals on phonolite matrix.. In the labuntsovite is sometimes translucent and you can see the white core of tsepinite na. In the paragenesis are additional aegirine, black needles, and large translucent natrolite crystals, white microcline, short prismatic thick neptunite, calcite, fluorite and so on.

 

Mineral Data
What's on the rock

Hilairite

Formula: 
Na2Zr[SiO3]3·3H2O
Strunz: 
9.DM.10
Hardness: 
4.5
Type Locality: 
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Labuntsovite-Mn

Formula: 
Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8·10-12H2O
Strunz: 
9.CE.30e
Hardness: 
6.0
Type Locality: 
Pegmatite No. 19, Kuftn'yun Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Neptunite

Formula: 
Na2KLi(Fe2+,Mn2+)2Ti2(Si8O24)
Strunz: 
9.EH.05
Hardness: 
5.0 - 6.0
Colour: 
Black
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland
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