montroydite

montroydite

[män′trȯi‚dīt]
(mineralogy)
HgO Natural mercury oxide mineral from Texas.
References in periodicals archive ?
Other mercury-bearing minerals identified from the mineralized veins include montroydite, schuetteite, calomel, gianellaite, mosesite, terlinguaite, eglestonite, metacinnabar, cinnabar, native mercury and the second world occurrence of donharrisite.
Like edgarbaileyite, montroydite can also exhibit various habits and colors ranging from thick bladed crystals to thin hair-like needles in colors ranging from pale yellow to deep reddish brown to black.
There it occurs as massive coatings and as clear to pale yellow striated crystals associated with native mercury, montroydite, cinnabar and, very rarely, hanawaltite.
Megascopically, it resembles montroydite but is much redder in color.
The mineral also has been identified from the Alpine mine, just south of the Clear Creek mine, associated with cinnabar, montroydite and native mercury in quartz-lined cavities.
It is generally associated with most of the described mercury-bearing minerals, especially native mercury, wattersite, montroydite and etched cinnabar.
Other close associations include native mercury, montroydite and edgarbaileyite.
1977) from the Mariposa mine, Terlingua district, Brewster County, Texas, where it is associated with terlinguaite, calomel, montroydite, native mercury and cinnabar.
The mineral occurs as isolated subhedral crystals that are intimately associated with greenish-brown resinous calomel, globules of native mercury, cinnabar and varicolored montroydite.
It is generally associated with cinnabar, edgarbaileyite, eglestonite, montroydite, mosesite, szymanskiite and wattersite.
Montroydite is a common mineral at all of the workings.
Occurrence: In fractures in the Jackfork sandstone with cinnabar, quartz and dickite and other mercury minerals (calomel, eglestonite, mercury, metacinnabar, montroydite, terlinguaite).