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- Thomsonite abstract "Thomsonite is the name of a series of tecto-silicate minerals of the zeolite group. Prior to 1997, thomsonite was recognized as a mineral species, but a reclassification in 1997 by the International Mineralogical Association changed it to a series name, with the mineral species being named thomsonite-Ca and thomsonite-Sr. Thomsonite-Ca, by far the more common of the two is a hydrous sodium, calcium and aluminium silicate, NaCa2Al5Si5O20·6H2O. Strontium can substitute for the calcium and the appropriate species name depends on the dominant element. The species are visually indistinguishable and the series name thomsonite is used whenever testing has not been performed. Globally, thomsonite is one of the rarer zeolites.Thomsonite was first identified in material from Scotland in 1820. It is named for the Scottish chemist Thomas Thomson. The crystal system of thomsonite is orthorhombic. The Mohs hardness is 5 to 5.5. It is transparent to translucent and has a density of 2.3 to 2.4. It may be colorless, white, beige, or somewhat green, yellow, or red. The crystals tend to be long thin blades that typically form radial aggregates, and sometimes fans and tufts. The aggregates are variable and may be spikey in appearance, dense and ball-like, or form worm-like growths. Tight acicular radiating clusters and sphericules are common forms.Thomsonite occurs with other zeolites in the amygdaloidal cavities of basaltic volcanic rocks, and occasionally in granitic pegmatites. Examples have been found in Faroe Islands (var. Faroelite), Scotland, Colorado, New Jersey, Oregon, Nova Scotia, India, and Russia.Nodules of massive thomsonite that display an attractive banded coloring are found along the shore of Lake Superior. Most of these thomsonite nodules and their derived pebbles are less than 0.6 cm (1/4 inch). Those enclosed in basalt are extremely difficult to remove without breaking them. Consequently, a very large percentage of those used as gemstones are from pebbles collected from beaches.".
- Thomsonite thumbnail Thomsonite_in_Basalt_Hydrous_calcium_sodium_aluminum_silicate_Grand_Marais_Cook_Minnesota_1884.jpg?width=300.
- Thomsonite wikiPageExternalLink view_structure.pl?src=iza&id=THO.
- Thomsonite wikiPageExternalLink Thomsonite-Ca.shtml.
- Thomsonite wikiPageExternalLink thomsonite.htm.
- Thomsonite wikiPageExternalLink min-3941.html.
- Thomsonite wikiPageExternalLink ima98(13).pdf.
- Thomsonite wikiPageID "2572060".
- Thomsonite wikiPageRevisionID "600974570".
- Thomsonite caption "Thomsonite from Minnesota".
- Thomsonite category "tecto-silicate".
- Thomsonite cleavage "perfect on {010}; good on {100}".
- Thomsonite color "colorless, white, beige".
- Thomsonite diaphaneity "transparent to translucent".
- Thomsonite formula "NaCa2Al5Si5O20·6H2O".
- Thomsonite gravity "2.23".
- Thomsonite hasPhotoCollection Thomsonite.
- Thomsonite luster "vitreous, pearly".
- Thomsonite mohs "5".
- Thomsonite name "Thomsonite".
- Thomsonite streak "white".
- Thomsonite symmetry "- Dipyramidal".
- Thomsonite system "orthorhombic".
- Thomsonite subject Category:Orthorhombic_minerals.
- Thomsonite subject Category:Tectosilicates.
- Thomsonite subject Category:Zeolites.
- Thomsonite type Abstraction100002137.
- Thomsonite type Chemical114806838.
- Thomsonite type Material114580897.
- Thomsonite type Matter100020827.
- Thomsonite type Mineral114662574.
- Thomsonite type OrthorhombicMinerals.
- Thomsonite type Part113809207.
- Thomsonite type PhysicalEntity100001930.
- Thomsonite type Relation100031921.
- Thomsonite type Softener115055936.
- Thomsonite type Substance100019613.
- Thomsonite type WaterSoftener115056112.
- Thomsonite type Zeolite115106867.
- Thomsonite type Zeolites.
- Thomsonite type ChemicalSubstance.
- Thomsonite type Mineral.
- Thomsonite type ChemicalObject.
- Thomsonite type Thing.
- Thomsonite comment "Thomsonite is the name of a series of tecto-silicate minerals of the zeolite group. Prior to 1997, thomsonite was recognized as a mineral species, but a reclassification in 1997 by the International Mineralogical Association changed it to a series name, with the mineral species being named thomsonite-Ca and thomsonite-Sr. Thomsonite-Ca, by far the more common of the two is a hydrous sodium, calcium and aluminium silicate, NaCa2Al5Si5O20·6H2O.".
- Thomsonite label "Thomsoniet".
- Thomsonite label "Thomsonit".
- Thomsonite label "Thomsonit".
- Thomsonite label "Thomsonita".
- Thomsonite label "Thomsonite".
- Thomsonite sameAs Thomsonit.
- Thomsonite sameAs Thomsonita.
- Thomsonite sameAs Thomsoniet.
- Thomsonite sameAs Thomsonit.
- Thomsonite sameAs m.07nvw2.
- Thomsonite sameAs Q429721.
- Thomsonite sameAs Q429721.
- Thomsonite sameAs Thomsonite.
- Thomsonite wasDerivedFrom Thomsonite?oldid=600974570.
- Thomsonite depiction Thomsonite_in_Basalt_Hydrous_calcium_sodium_aluminum_silicate_Grand_Marais_Cook_Minnesota_1884.jpg.
- Thomsonite isPrimaryTopicOf Thomsonite.
- Thomsonite name "Thomsonite".
