Iceland spar

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Iceland spar

A doubly refracting transparent calcite used in optical instruments.

Iceland spar

(Earth Sciences / Minerals) a pure transparent variety of calcite with double-refracting crystals used in making polarizing microscopes

Iceland spar (

nd)

A form of calcite that is transparent and causes light passing through it to refract in two directions (forming a double image of an object seen through it). Iceland spar occurs in perfect rhombohedrons and is used in optical instruments.

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Noun

Iceland spar - a transparent calcite found in Iceland and used in polarizing microscopes

calcite - a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone

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calcite Iceland Nicol prism Nicol's prism Positive crystals			monocrystalline Iceland spar of Yakutia (Russia); 2. Search for the dose-sensitive optically stimulated luminescence ... by Jaek, Ivar; Hutt, Galina; Rammo, Ilmar; Vasilchenko, Valeri / Proceedings of the Estonian Academy of Sciences: Geology			iceberg lettuce Icebird iceblink iceboat icebound icebox icebox cake icebreaker icecap icecream iced iced coffee Iced cream iced tea iced-tea spoon icefall icehouse Içel Icel. Iceland Iceland agate Iceland crystal Iceland lichen Iceland moss Iceland poppy Iceland spar Icelander Icelandic Icelandic krona Icelandic monetary unit Icelandic-speaking icemaker iceman Iceni icepick Icequake icescape icetray icewine ICFTU ich ich-laut Ichang Ichihara Ichikawa Ichinomiya ichneumon ichneumon fly Ichneumonidae Ichneumonidan Ichneumonides			Iceland Deep Drilling Project Iceland Defense Force Iceland Defense Forces Iceland disease Iceland disease Iceland disease Iceland disease Iceland Forest Research Station Iceland Independence Day Iceland lichen Iceland lichen Iceland lichen Iceland lichens Iceland lichens Iceland lichens Iceland Low Iceland moss Iceland moss Iceland moss Iceland mosses Iceland mosses Iceland mosses Iceland NATO Radar Iceland Nature Conservation Association Iceland poppies Iceland poppies Iceland poppy Iceland poppy Iceland Regional Operations Control Center Iceland Scotland Overflow Water Iceland spar Iceland Stock Exchange Iceland’s Crisis Response Unit Icelandair Icelandair, Iceland Icelander Icelander Icelanders Icelanders Icelanders' Sagas Icelandic Icelandic Icelandic (disambiguation) Icelandic (disambiguation) Icelandic (language) Icelandic (sheep) Icelandic Air Defense System Icelandic Broadcasting Corporation Icelandic Building Research Institute Icelandic Canadian Club of British Columbia Icelandic cattle Icelandic Childhood Cancer Parent Organisation Icelandic Civil Aviation Administration Icelandic Cod War Icelandic Cod Wars Icelandic communist party Icelandic Council for Standardization Icelandic Festival Icelandic Freezing Plants Corporation

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