| CaBePO4(F,OH)
These samples of herderite are displayed in the Smithsonian Museum of Natural History. Herderite is a phosphate mineral of beryllium with fluorine and it has the composition CaBePO4(F,OH). The sample at left is about 5 cm across and is from Gilgit, Northern Areas, Pakistan. The sample at right is from Fletcher mine, North Groton, New Hampshire. It is about 5 cm wide.
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