Mineral Guide · Mineral
Cadsulfohite is a newly recognised hydrated cadmium sulfate hydroxide from the Tsumeb ore district in Namibia.
Cadsulfohite is a newly recognised hydrated cadmium sulfate hydroxide from the Tsumeb ore district in Namibia.
The reference formula is Cd2(SO4)(OH)2. Cadsulfohite belongs to the sulfates and crystallises in the monoclinic system. Mindat records cadsulfohite as a valid type-locality species and reports associations with germanite, galena, quartz, cerussite and edwardsite. Its small crystals and recent description make analytical context important.
Typical colours include colourless to pale grey. For small or complex mineral species, crystal size, transparency, lustre and matrix association are often more diagnostic than colour alone.
Cadsulfohite forms in or is associated with highly oxidised cadmium-rich zones of polymetallic ore deposits. Important documented localities include Tsumeb Mine in Namibia, its type locality. A precise mine or geological setting is preferable to a broad country label when it is known.
Cadsulfohite is best treated as a labelled reference or collector specimen. Protect fragile crystals from impact and humidity changes. Arsenic-, cadmium-, lead-, thorium- and selenium-bearing minerals should not be cut, ground or used in jewellery; wash hands after handling and keep them away from food and children.
Reviewed by NotOnlyRocks Editorial Team
Last reviewed: 21 August 2026
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