plumbogummite

plumbogummite

[¦pləm·bō′gə‚mīt]
(mineralogy)
PbAl3(PO4)2(OH)5·H2O A mineral composed of hydrous basic lead aluminum phosphate.
A group of isostructural minerals, that includes gorceixite, goyazite, crandallite, deltaite, florencite, and dussertite, as well as plumbogummite.
References in periodicals archive ?
10 mm) groups of white plumbogummite crystals and occasional brown spheres of mottramite.
The witherite, calcite, fluorite, barite, linarite, barytocalcite and plumbogummite have never been beaten, mimetite from Dry Gill (the variety known as campylite) is unique, and the recent finds of boracite from Boulby mine have set new standards for the species.
Ralph is especially associated with campylite and plumbogummite from the Dry Gill mine, Caldbeck Fells, which was reopened in the 1970s after decades of neglect.
The pyromorphite, plumbogummite, hemimorphite and mimetite from the Caldbeck Fells were, and remain, among the finest the world has ever seen.
com) were a few small-miniature specimens from a new find of plumbogummite with pyromorphite from the Daoping mine, Guilin, Guangxi--yes, this is the now-famous locality for the gorgeous pyromophite specimens commonly seen around the turn of the millennium but now not commonly seen (at least in world-class examples) at all.
1490*** Plumbogummite and Mimetite, Drygill, Cumberland, England, no.
Surprisingly, I saw little that was new from China (although some of the pale blue plumbogummite specimens from Yangshuo are quite impressive), or for that matter from India--although of course the show was awash in zeolites from the Deccan Plateau, lovely green fluorites from the Xianghualing mine, Chinese cassiterite, aquamarine, calcite, stibnite, etc.
For example, the Desmond Sacco collection has a large half-"bowtie" schorl acquired in the late 1960's; the Natural History Museum in London has a plumbogummite from Krantzberg, purchased from well-known collector-dealer Charles Key in 1985; and one of us (BC) has a thumbnail schorl on granite matrix purchased in 1981 from Carlton Gems & Minerals in Johannesburg.
Jeanbandyite has since been found on the dumps in a completely different paragenesis, as crudely formed orange octahedrons covered by an orange plumbogummite crust, associated with hemispheres of banded "wood tin" cassiterite, quartz, pyrite and muscovite.
Associated minerals on other samples are: Co- and Ni-bearing mawbyite, cobaltlotharmeyerite, galena, arseniosiderite and plumbogummite.
Baikal Geo also had specimens of plumbogummite in blue crusts with wulfenite microcrystals, from the La Monta[tilde{n}]esa mine, Navalagamella, Madrid province.