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Noun1.Zinnwaldite - a mica containing iron and lithiumzinnwaldite - a mica containing iron and lithium  
atomic number 3, Li, lithium - a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals
isinglass, mica - any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
References in periodicals archive ?
Conceived by John Gallin, director of NIH's Clinical Center, and Smithsonian geologists Jeff Post and Mike Wise, the exhibit features 39 minerals, from azurite to zinnwaldite.
Zinnwaldite occurs in the Volodarsk pegmatites, and although it is rarely of specimen quality it is a major constituent of the micas in the pegmatite.
4] micas [left arrow] Increasing amounts of Si Increasing amount of Fe [left arrow] Li--micas Lepidolite K-Li,Al Zinnwaldite K-[Fe.
Petrological and geochemical characteristics of the Pleasant Ridge zinnwaldite topaz granite, southern New Brunswick, and comparisons with other topaz-bearing felsic rocks.
Other minerals containing significant F concentrations are topaz, lepidolite, zinnwaldite, and the mica group (Robinson and Edgington 1946).
Silvery brown bladed zinnwaldite in spherical clusters and botryoidal masses is particularly common in the Dalgaranga-Mount Farmer pegmatite field.
Mineralogists of the 19th century were much more successful in the description of new layer hydrosilicates: allophane, amesite, antigorite, aspidolite, batavite, biotite /a series name/, celadonite, chamosite, chrysotile /a series name/, clinochlore, corundophyllite, cronstedtite, delessite, diabantite, ephesite, glauconite /a series name/, halloysite, kaolinite, muscovite, nacrite /a polytype/, nontronite, palygorskite, paragonite, penninite /or pennine/, phengite /a series name/, phlogopite, polylithionite, pyrophyllite, ripidolite, roscoelite, saponite, sauconite, sepiolite, serpentine, siderophyllite, stevensite, tainiolite, thuringite, vermiculite /trioctahedral and dioctahedral, distinguished in the 20th century/, volkonskoite, zinnwaldite /a series name/.