• Tephroite - Wikipedia

    en.wikipedia.org/wiki/Tephroite Tephroite is the manganese endmember of the olivine group of nesosilicate minerals with the formula Mn 2 Si O 4.A solid solution series exists between tephroite and its analogues, the group endmembers fayalite and forsterite.Divalent iron or magnesium may readily replace manganese in the olivine crystal structure.
  • Tephroite: Mineral information, data and localities.

    www.mindat.org/min-3913.html Tephroite: Francis C A, Ribbe P H (1980) The forsterite-tephroite series: I. Crystal structure refinements American Mineralogist 65 1263-1269: 1980: Madagascar: 0: 293: 0019695: Tephroite: Fujino K, Sasaki S, Takeuchi Y, Sadanaga R (1981) X-ray determination of electron distributions in forsterite, fayalite and tephroite Acta Crystallographica ...
  • Tephroite | mineral | Britannica

    www.britannica.com/science/tephroite Tephroite, olivine mineral found only in iron-manganese ore deposits and skarns and in metamorphosed manganese-rich sediments, such as those of Cornwall, Eng., and Franklin, N.J., in the United States. Tephroite (manganese silicate; Mn2SiO4) forms a solid solution series with the olivine fayalite
  • Tephroite Mineral Data

    webmineral.com/data/Tephroite.shtml General Tephroite Information : Chemical Formula: Mn2SiO4 : Composition: Molecular Weight = 201.96 gm Manganese 54.41 % Mn 70.25 % MnO: Silicon 13.91 % Si 29.75 % SiO 2: Oxygen 31.69 % O: 100.00 % 100.00 % = TOTAL OXIDE
  • Tephroite | Definition of Tephroite by Merriam-Webster

    www.merriam-webster.com/dictionary/tephroite Tephroite definition is - a mineral Mn2SiO4 that consists of Manganese silicate and is isomorphous with olivine.
  • Tephroite Value, Price, and Jewelry Information ...

    www.gemsociety.org/article/tephroite-jewelry-and-gemstone-information Tephroite is generally reddish brown and barely translucent. However, it takes a good polish and is massive enough to make good cabochons. Only the New Jersey and Australian localities seem to have provided such material, however. Faceted gems are unknown.
  • Tephroite Mineral Specimen For Sale - Dakota Matrix Minerals

    www.dakotamatrix.com/products/2449/tephroite Tephroite - Reddish short prismatic Tephroite crystals to 1.5cm, which appear to be somewhat etched on the surfaces, with black sub-metallic Jacobsite octahedrons to 2mm set on Quartz matrix. Very nice combination piece from Wessels with very good and quite large Tephroite crystals. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.
  • Tephroite

    www.mindat.org/gm/3913 This specimen hosts several pristine, undamaged crystals of Tephroite in association with some tiny, pale crystals of Rhodochrosite. The Tephroite crystals consist of highly complex, etched crystals with brilliant glassy luster, gemmy clarity, and deep reddish brown color. The crystals range in size up to 1cm. Specimen size is 3.1cm x 2.4cm x ...
  • Tephroite: Mineral information, data and localities.

    zh.mindat.org/min-3913.html Hewett, Donnel Foster, Charles Wesley Chesterman & Bennie Wyatt Troxel (1961), Tephroite in California manganese deposits: Economic Geology: 56: 49; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 60, 361; Pemberton, H. Earl (1983), Minerals of ...
  • Tephroite's Profile - ROBLOX

    www.roblox.com/users/96356257/profile Tephroite is one of the millions playing, creating and exploring the endless possibilities of Roblox. Join Tephroite on Roblox and explore together!oh man, wait you took it? bob, he took- I was right there, I was gonna get it- he took it right from under me oh he hates me did you hear that? yea what the hell man I've been nothing but nice to you