One of the most common cave minerals, in guano deposits, and in phosphorites, formed at low pH by reaction of phosphate-rich solutions with calcite and clay.
IMA Status:
Valid Species (Pre-IMA) 1865
Locality:
Found on Aves Island, Venezuela, west of Dominica, in the Caribbean Sea. Link to MinDat.org Location Data.
Name Origin:
To honor Professor George Jarvis Brush (1831-1912), American mineralogist, Yale University, New Haven, Connecticut, USA.
Chemical Formula: 