A Note on Varlamoffite and Associated Minerals from the Batang Padang District, Perak, Malaya, Malaysia1

J. B. Alexander, and B. H. Flinter
Director Geological Survey, Malaya
Senior Geologist, Malaya
1Compiled from material included in a cyclostyled circular issued by the Director of the Geological Survey, Malaysia, for internal distribution.

Summary: A new occurrence of varlamoffite is described, and the status of this species is considered; the term is best employed for cryptocrystalline yellowish material consisting predominantly of Sn and H20 that may yield a diffuse powder pattern comparable to, or closely resembling that of cassiterite, but does yield a powder pattern identical with that of cassiterite after heat-treatment at about 1200° C. A new mineral, malayaite, CaSnSiO5, is briefly described; it is isostructural with sphene.

Mineralogical Magazine; December 1965 v. 35; no. 272; p. 622-627; DOI: 10.1180/minmag.1965.035.272.05
© 1965, The Mineralogical Society
Mineralogical Society (www.minersoc.org)