Bright yellow jouravskite crystals on white xonotlite matrix with reflection.
Upright view of lemon yellow jouravskite cluster displaying mirror reflection.
Close up macro of translucent yellow jouravskite crystals on matrix.

Jouravskite on Xonotlite

Jouravskite – Ca3Mn4+(SO4)(CO3)(OH)6·12H2O
Elements: Calcium, Manganese, Sulfur, Oxygen, Carbon, Hydrogen
Class: Sulfates
Crystal System: Hexagonal
Hardness: 2.5
Calcite
Talc (1)Diamond (10)
Soft. A fingernail can scratch it.
Xonotlite – Ca6Si6O17(OH)2
Elements: Calcium, Silicon, Oxygen, Hydrogen
Class: Silicates – Inosilicates
Crystal System: Monoclinic
Hardness: 6 - 6.5
Orthoclase
Talc (1)Diamond (10)
Scratches glass. Harder than a steel knife.
Origin: N’Chwaning III Mine - N’Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape – South Africa

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