Plumbogummite

Plumbogummite and mimetite (campylite)

Origin: Caldbeck Falls, Cumbria, England

Owner: Lou Perloff

Microscopic image

Photo courtesy of:

Lou Perloff

Photo-Atlas of Minerals

This specimen contains a few good areas of botryoidal habit sky blue crystals to 1 mm with associated yellow micro crystals of mimetite (yellow) with black hollandite

Origin: Drygill mine, Caldbeck Fells, Cumberland, England

Sample size: 4.5 x 3 x 2.5 cm

Light blue, powdery crust on quartz associated with libethenite

Origin: Mex-Tex mine, Socorro Co., New Mexico, United States

Sample size: 4 x 2.5 x 2 cm

LIght blue to grey spherulitic or mammilary crystals on matrix and on pyromorphite. Associated with yellow barrel shaped hinsdalite crystals to 0.75 mm and wulfenite as thin plates (yellow and grey) to 0.75 mm.

Origin: San Rafael mine, Nye Co., Nevada, United States

Sample size: 10.5 x 7 x 5 cm

Orange very micro, perhaps less than 0.1 mm plates covering wolframite.

Origin: Les Montmins mine, Eschassieres, Ebreuil, Allier, Auvergne, France

Sample size: 4 x 3 x 3 cm

Light blue coating of plumbogummite on light green pyromorphite. Tiny crystals of yellow mimetite have overgrown on the pyromorphite/plumbogummite.

Origin: Roughton Gill mine, Cumberland, England

Ex. Kidwell collection

Sample size: 3 x 3 x 3 cm

Photo courtesy of:

Tom Loomis

Dakota Matrix Minerals

Light blue plumbogummite forming a partial epimorph after a mimetite crystal. With what appears to be a second regrowth of mimetite in to the void left by the dissolved original mimetite

Origin: Penberthy Croft mine, St Hilary, Cornwall, England, UK

Sample size: microphoto

Owner: Steve Rust

Photo courtesy of:

Steve Rust