Lansfordite

Lansfordite

Lansfordite is a hydrated magnesium carbonate mineral with composition: MgCO3·5H2O. Landsfordite was discovered in 1888 in a coal mine in Lansford, Pennsylvania. It crystallizes in the monoclinic system and typically occurs as colorless to white prismatic crystals and stalactitic masses. It is a soft mineral, Mohs hardness of 2.5, with a low specific gravity of 1.7. It is transparent to translucent with refractive indices of 1.46 to 1.52.

References

* [http://www.mindat.org/min-2324.html Mindat with locations]
* [http://www.webmineral.com/data/Lansfordite.shtml Webmineral]
* [http://euromin.w3sites.net/mineraux/LANSFORDITE.html Euromineral]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • lansfordite — lansforditas statusas T sritis chemija apibrėžtis Mineralas. formulė Mg[CO₃]·5H₂O atitikmenys: angl. lansfordite rus. лансфордит …   Chemijos terminų aiškinamasis žodynas

  • lansfordite — ˈlan(t)sfə(r)ˌdīt, anzf noun ( s) Etymology: German lansfordit, from Lansford, Pa., its locality + German it ite : a mineral MgCO3.5H2O composed of a hydrous basic carbonate of magnesium like paraffin when first taken out of the ground but… …   Useful english dictionary

  • lansfordite — lans·ford·ite …   English syllables

  • Magnesium carbonate — Magnesium carbonate …   Wikipedia

  • List of minerals K-M (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia

  • List of minerals — This is a List of minerals for which there are Wikipedia articles. Mineral variety names and mineraloids are to be listed after the valid minerals for each letter.For a complete listing (about 4,000) of all mineral names: List of minerals… …   Wikipedia

  • Carbonate minerals — are those minerals containing the carbonate ion: CO32 .Carbonate classesAnhydrous carbonates*Calcite group: Trigonal **Calcite CaCO3 **Gaspeite (Ni,Mg,Fe2+)CO3 **Magnesite MgCO3 **Otavite CdCO3 **Rhodochrosite MnCO3 **Siderite FeCO3 **Smithsonite …   Wikipedia

  • Monohydrocalcite — The crystal structure of monohydrocalcite. Ca is shown as a blue atom, O atoms red, and the carbonate anion and water molecules are shown as bonded entities. General Category Carbo …   Wikipedia

  • CARBONATES NATURELS — Les carbonates sont des minéraux largement représentés à la surface du globe. Le carbonate de calcium, en particulier, est le constituant principal des coquilles de nombreux organismes. On le retrouve surtout dans la lithosphère sous forme de… …   Encyclopédie Universelle

  • lansforditas — statusas T sritis chemija apibrėžtis Mineralas. formulė Mg[CO₃]·5H₂O atitikmenys: angl. lansfordite rus. лансфордит …   Chemijos terminų aiškinamasis žodynas

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”