Purpurite is a manganese phosphate mineral with the formula MnPO4, with varying amounts of iron depending upon its source. It occurs in color ranges from brownish black via purple and violet to dark red.
via Wikipedia infobox
Purpurite is a manganese phosphate mineral with the formula MnPO4, with varying amounts of iron depending upon its source. It occurs in color ranges from brownish black via purple and violet to dark red.
Purpurite forms a series with the iron-bearing endmember heterosite, FePO4.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).