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Fluorapophyllite-(NH₄)
About
Named for being the ammonium (NH4) analogue of fluorapophyllite-(K).
Type Locality
Vechec, Vranov nad Topľou County, Prešov Region, Slovakia (Slovak Republic)
Mineral Data
NH
4
Ca
4
(Si
8
O
20
)F · 8H
2
O
Physical Properties
Colour:
Colourless to light pink
Crystal System:
Tetragonal
Streak:
White
Hardness:
4½ - 5
Tenacity:
Brittle
Synonyms
Synonyms:
Fluorapophyllite-(NH4) and IMA2019-083
