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- Iceland_spar abstract "Iceland spar, formerly known as Iceland crystal (Icelandic: silfurberg; lit. silver-rock), is a transparent variety of calcite, or crystallized calcium carbonate, originally brought from Iceland, and used in demonstrating the polarization of light (see polarimetry). It occurs in large readily cleavable crystals, easily divisible into rhombs, and is remarkable for its double refraction.Historically, the double-refraction property of this crystal was important to understanding the nature of light as a wave. This was studied at length by Christiaan Huygens and Isaac Newton. Sir George Stokes also studied the phenomenon. Its complete explanation in terms of light polarization was published by Augustin-Jean Fresnel in the 1820s.Mines producing Iceland spar include many mines producing related calcite and aragonite as well as those famously in Iceland, productively in the greater Sonoran desert region as in Santa Eulalia, Chihuahua, Mexico and New Mexico, United States, as well as in the People's Republic of China.".
- Iceland_spar thumbnail Silfurberg.jpg?width=300.
- Iceland_spar wikiPageID "318869".
- Iceland_spar wikiPageRevisionID "596636613".
- Iceland_spar hasPhotoCollection Iceland_spar.
- Iceland_spar subject Category:Calcium_minerals.
- Iceland_spar subject Category:Carbonate_minerals.
- Iceland_spar subject Category:History_of_Iceland.
- Iceland_spar subject Category:Optical_materials.
- Iceland_spar subject Category:Polarization_(waves).
- Iceland_spar subject Category:Transparent_materials.
- Iceland_spar subject Category:Trigonal_minerals.
- Iceland_spar type Abstraction100002137.
- Iceland_spar type CalciumMinerals.
- Iceland_spar type CarbonateMinerals.
- Iceland_spar type Material114580897.
- Iceland_spar type Matter100020827.
- Iceland_spar type Mineral114662574.
- Iceland_spar type OpticalMaterials.
- Iceland_spar type Part113809207.
- Iceland_spar type PhysicalEntity100001930.
- Iceland_spar type Relation100031921.
- Iceland_spar type Substance100019613.
- Iceland_spar type TransparentMaterials.
- Iceland_spar type TrigonalMinerals.
- Iceland_spar comment "Iceland spar, formerly known as Iceland crystal (Icelandic: silfurberg; lit. silver-rock), is a transparent variety of calcite, or crystallized calcium carbonate, originally brought from Iceland, and used in demonstrating the polarization of light (see polarimetry).".
- Iceland_spar label "Espato da islândia".
- Iceland_spar label "Espato de Islandia".
- Iceland_spar label "Iceland spar".
- Iceland_spar label "Spath d'Islande".
- Iceland_spar label "Szpat islandzki".
- Iceland_spar label "Исландский шпат".
- Iceland_spar sameAs Islandský_křišťál.
- Iceland_spar sameAs Espato_de_Islandia.
- Iceland_spar sameAs Islandiako_espatoa.
- Iceland_spar sameAs Spath_d'Islande.
- Iceland_spar sameAs Szpat_islandzki.
- Iceland_spar sameAs Espato_da_islândia.
- Iceland_spar sameAs m.02p1gnt.
- Iceland_spar sameAs Q974568.
- Iceland_spar sameAs Q974568.
- Iceland_spar sameAs Iceland_spar.
- Iceland_spar wasDerivedFrom Iceland_spar?oldid=596636613.
- Iceland_spar depiction Silfurberg.jpg.
- Iceland_spar isPrimaryTopicOf Iceland_spar.