Pirofillite

Key facts

Mineral.name

Pyrophyllite

Mineral.category

Phyllosilicate minerals

Mineral.group

Pyrophyllite-Talc group

Mineral.boxbgcolor

dfce9d

Mineral.image

Pyrophyllite-118706.jpg

Mineral.imagesize

260px

Mineral.caption

Pearly radial cluster of pyrophyllite from Hillsborough District, Orange County, North Carolina (Size: 11 × 7.3 × 6.6 cm)

Mineral.formula

Al2Si4O10(OH)2

Mineral.IMAsymbol

Prl

Mineral.molweight

360.31 g/mol

Mineral.system

Monoclinic or triclinic

Mineral.class

Prismatic (2/m) or pinacoidal ()