Celsian is a barian feldspar, chalky-white and frequently stained blue. Associations are hendricksite mica, bustamite, and andradite. Many such specimens also have thin films of margarosanite on cleavage surfaces. Specimen is from Franklin. Maximum dimension is 14 cm. Franklin Mineral Museum,#SG-511.
Photo courtesy of the Franklin Mineral Museum Inc. Archive.
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Celsian-microcline-hyalophhane feldspar with dark-brown hendricksite (mica), pink bustamite, brown andradite and white calcite from Franklin. Specimen is 9 cm in maximum dimension. Smithsonian Institution, #R18351
Photo courtesy of the Franklin Mineral Museum Inc. Archive.