ophicalcite


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ophicalcite

(ˌɒfɪˈkælsaɪt)
n
(Geological Science) a type of marble containing serpentine and calcite
References in periodicals archive ?
"Jewelry-industrial" and "industrial" materials range down a scale from lazurite, jadeite and nephrite at the top, through charoite, rhodonite, jasper and petrified wood, to items like "aventurine quartzite," "ophicalcite (serpentine/calcite)" and "agalmatolite (pyrophyllite/talc)," although, perhaps mercifully, the last three which merit separate chapters in the parade of chapters to follow are malachite, chalcedony and rhodonite.
Geology of Gems
* From the western part of Sierra de los Placeres to the northwestern part of Sierra de Campo Nuevo the San Hipolito consists of serpentinites, microgabbros, spilitic pillow lavas, ophicalcites, radiolarites, with minor interbedded tuffs and claystones.
* South of the Puerto Nuevo block the San Hipolito Formation is represented in the eastern vicinities of the San Jose de Castro--Bahia Asuncion Road, by serpentinites and spilites; in the Sierras El Chorrito and Los Ajos (some 5 km east of Puerto Nuevo), and in the valley of Arroyo San Cristobal (FIGURES 16 and 17) by abundant ophicalcites, spilites, volcano-sedimentary strata, thin bedded gray siliceous deposits, radiolarites, with interbedded limestone and pink dolomite; on either side of the Puerto Nuevo Canyon, at about 2 km from Puerto Nuevo, by ophicalcites, light gray limestone, and some sandstone.
Las rocas intrusivas basicas-ultrabasicas del Complejo Estratificado del Vizcaino y la ofiolita del Vizcaino (Baja California Sur, Mexico)
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