Simple oxide, tin-bearing mineral
Hardness: 6 to 6½
Streak: Light yellow
Solubility: Soluble with difficulty in acids
Varlamoffite occurs in the oxidised protions of
At the Sardine mine, near Ewan, Kangaroo Hills district, Queensland, Australia, varlamoffite occurs in the oxidised portion of a stannite-cassiterite vein (Dana).
In Guangxi, China, varlamoffite occurs in a greisenised niobium-tantalum bearing stock, associated with cassiterite (Dana).
At the type locality, Kalima, Maniema, DR Congo, varlamoffite occurs in tin-bearing veins (AM 34.618).
At Sungei Lah (Sungei Lok), Chenderiang, Balang Padang, Perak, Malaysia, varlamoffite occurs on cassiterite (Dana).
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