page_title: Brownmillerite
hierarchical_section_title: Brownmillerite
caption_attribution_description: English: Brownmillerite Locality: Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel Mts, Rhineland-Palatinate, Germany Red/red-brown crystals of Brownmillerite from the TL (analysed). Field of view 3 mm. Specimen and photo Leon Hupperichs. Deutsch: Brownmillerit
context_page_description: Brownmillerite is a rare oxide mineral with chemical formula Ca₂(Al, Fe)₂O₅. It is named for Lorrin Thomas Brownmiller, chief chemist of the Alpha Portland Cement Company, Easton, Pennsylvania.
context_section_description: Brownmillerite is a rare oxide mineral with chemical formula Ca₂(Al,Fe)₂O₅.  It is named for Lorrin Thomas Brownmiller (1902–1990), chief chemist of the Alpha Portland Cement Company, Easton, Pennsylvania.
caption: Red/red-brown crystals of brownmillerite from Caspar quarry, Bellerberg Volcano, Ettringen, Mayen, Eifel Mts, Rhineland-Palatinate, Germany
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