On Bassetite and Uranospathite, new species hitherto classed as Autunite
1915; Volume: 17; Issue: 81 Linguagem: Inglês
10.1180/minmag.1915.017.81.11
ISSN2515-821X
Autores Tópico(s)Paleontology and Stratigraphy of Fossils
ResumoThe name autunite was originally g!ven to the well-known mineral from Autun, but it would seem that no crystals of this material have been found that would afford measurements oi1 the goniometer. As the result of optical examination Des Cloizeaux (2) concluded that the mineral was biaxial, and he observed further that the angle decreased when the specimen was heated (6); the extinction was apparently straight, and he therefore referred the trysts,Is to the rhombic system ; with the contact goniometer he found mm '=90°48'.
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