Found in dried-out or decomposed algae on porous calcium-carbonate (calcite and aragonite) substrates. Precipitated by microbes. Struvite group
Proposed IMA 2007
South shore of Mono Lake, California, USA. Link to MinDat.org Location Data.
Named for Robert M. Hazen, Senior Research Scientist at the Carnegie Institution of Washington�s Geophysical Laboratory and the Clarence Robinson Professor of Earth Science at Georg e Mason University.