Mineralpedia Details for Plumbophyllite

Named for the lead content after the Latin plumbum, and for the its silicate sheet structure after the Greek phyllo, meaning “leaf.” It is found only at the type locality at the Blue Bell claims in California, USA and at the Black Star pit at the Mount Isa mines in Queensland, Australia. It appears as colorless to pale blue prismatic crystals. It was found at the type locality in narrow veins in a silca-rich hornfels in association with cerussite, chrysocolla, fluorite, goethite, gypsum, mimetite, opal, plumbotsumite, quartz, sepiolite, and wulfenite.

Ref. Kampf, A. R., et al. and American Mineralogist August-September v. 94 no. 8-9 p. 1198-1204

Formula

Pb₂Si₄O₁₀·H₂O 

Crystal System

Orthorhombic 

Luster

Vitreous - Pearly 

Color

lght blue 

Class

Orthorhombic - Dipyramidal 

Hardness

- 

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Rich in aqua blue, platy fans to 1mm of this newly approved IMA mineral.

Light blue, compact, radial, thin platy crystals in matrix.