Natural Hollandite Star Quartz Crystal Clusters x 20 From Congo
R840.00 ZAR
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Natural Hollandite Star Quartz Crystal Clusters x 20 From Congo
179-137-260202BM
R840.00 ZAR
AVAILABILITY: We currently have 1 in stock
A NOTE FROM NICK
New Stock !! A tray of 20 super rare natural Hollandite Star crystals and small clusters. This is a new small batch they were almost extinct, enjoy while you can.
PRODUCT DESCRIPTION
HOLLANDITE STAR CRYSTALS
Hollandite is a barium manganese oxide mineral (BaMn₈O₁₆) that forms black to steel-gray metallic crystals with a monoclinic structure. The mineral occurs primarily in metamorphosed manganese-rich deposits and hydrothermal veins,. Hollandite features a distinctive tunnel structure where barium cations occupy channels formed by manganese oxide octahedra, making it valuable for research in battery technology, catalysis, and nuclear waste storage applications.
PRODUCT MINERALS
Quartz, Barium-manganese
PRODUCT FEATURES
Needle
PRODUCT COLOUR
White, Black
MOHS HARDNESS SCALE
7
PRODUCT DATA
Locality = Madagascar
Grade = Very Good to A Grade
Size =33 - 57 mm
PRODUCT WEIGHT: 0.6 kg
