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Vinogradovite Neptunite & Unnamed (Fe-analogue of Zakharovite)

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SYM1068876

Vinogradovite Neptunite & Unnamed (Fe-analogue of Zakharovite)

Rare Mineral

Description Tabs

Description
Locality: 
Aris Quarry, Windhoek Rural, Khomas Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1 × 1 cm
Description

White sprays of vinogradovite sprays on the tip of aegirine with black neptunite and brownish unnamed (fe-analogue of zakharovite) on the matrix. 

Mineral Data
What's on the rock

Vinogradovite

Formula: 
(Na,Ca,K)4Ti4AlSi6O23(OH)·2H2O
Strunz: 
9.DB.25
Hardness: 
4.0
Type Locality: 
Lepkhe-Nel'm Mt (Lepkhe-Nelm; Nepkha), Seidozero Lake, 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