1880/09/01 by Heddle · 3 citations
Earth and Planetary Sciences · Computer Science · Chemistry · #Mineralogy and Gemology Studies #Geochemistry and Geologic Mapping #Paleontology and Stratigraphy of Fossils #Orthoclase #HAMLET (protein complex) #Mineralogy #Geochemistry #Geology #Notice #Mineral #Biotite #Chemistry #Archaeology #Art #Geography #Paleontology #Law
paper · doi:10.1180/minmag.1880.004.18.04
openalex publication_date 1880/09/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/05/21
I give this name to a substance which may be regarded as of the nature of a hydrated magnesian felspar. It was found by Mr. Dudgeon and myself in granular limestone, about one third of a mile above and north-east of the hamlet of Balvraid; this hamlet is situated six miles up the Glen Beg of Glen Elg, Inverness-shire. Only a single large mass containing the mineral was found. In this mass it was associated with blue necronite (orthoclase of limestones), Biotite, and a hydrated labradorite. Its colour is purplish brown of a pale cast; its structure is crystalline granular, it may be called saccharoid; its hardness is 6; its specific gravity from 2·905 to 2·908