putnisite
Meaning
Noun
- A quartz-like mineral, purple in colour, naturally occurring brittle crystals smaller than 0.5 mm, with an orthorhombic crystalline matrix of SrCa4</sub>Cr3+</sup>8(CO3</sub>)8SO4</sub>(OH)16·23H2O
Origin
- Putnis + -ite, from the name of the discoverers, mineralogists Andrew and Christine Putnis.
Modern English dictionary
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