gearksutite

gearksutite

[jē′ärk·sə‚tīt]
(mineralogy)
CaAl(OH)F4·H2O A clayey mineral composed of hydrous calcium aluminum fluoride, occurring with cryolite.
References in periodicals archive ?
In 2003, excellent specimens of creedite, some with gearksutite, celestine, and/or botryoidal rhodochrosite, were released from a 2001 discovery (Moore, 2004).
5 cm associated with creedite, rhodochrosite and gearksutite.
Gearksutite generally is the last of these minerals to form (D.
Gearksutite was first found in the Cresson open pit in 2001.
Associated minerals are: quartz, orthoclase, albite, aegirine, kupletskite, elpidite, lorenzenite, pyrochlore, monazite-(Ce), gagarinite-(Y), ralstonite, gearksutite and molybdenite.
Pyrargyrite, pyrite, quartz, siderite, silver (some after pyrargyrite and stephanite), sphalerite, stephanite, vivianite, wurtzite; see Aliada, Nueva Virginia, Aullagas Colquiri Cassiterite, (*) colquirite, creedite, fluorite, gearksutite, gypsum, madocite, pyrite, ralstonite, sphalerite; see San Antonio 1 Comanche See Miriquiri; also a 15 meter bromeliad Concordia, also Cassiterite, Tourmaline called Santo Domingo Elevation to 5060 m
The secondary calcium fluoride minerals gearksutite and creedite were reported from the mine by Jones (1980) and Besse (1981).
In this respect, the absence of the secondary calcium fluoride minerals gearksutite and creedite in the vugs with the new lead fluorides, and the presence of essential calcium in only one of the new lead fluorides, calcioaravaipaite, is notable.
Peter's Dome, El Paso County, Colorado, where microcrystalline aggregates are found sparingly with pachnolite, cryolite, prosopite, thomsenolite and gearksutite in aluminum fluoride pegmatites.