• Magnesiocummingtonite - Wikipedia

    en.wikipedia.org/wiki/Magnesiocummingtonite Magnesiocummingtonite is the magnesium rich endmember of the cummingtonite-grunerite series of the amphibole group of minerals, with the following composition: (Mg) 7 Si 8 O 22 (OH) 2.. Magnesiocummingtonite is considered to be an aptly named magnesium rich variety of the mineral cummingtonite which has Fe 2+ substituting for some of the Mg. Divalent manganese may also substitute for magnesium ...
  • Cummingtonite - Wikipedia

    en.wikipedia.org/wiki/Cummingtonite Cummingtonite was named after the town of Cummington, Massachusetts, where it was discovered in 1824. It is also found in Sweden, South Africa, Scotland, and New Zealand.. Chemistry. Cummingtonite is a member of the cummingtonite-grunerite solid solution series which ranges from Mg 7 Si 8 O 22 (OH) 2 for magnesiocummingtonite to the iron rich grunerite endmember Fe 7 Si 8 O 22 (OH) 2.
  • Magnesiocummingtonite Mineral Data

    webmineral.com/data/Magnesiocummingtonite.shtml General Magnesiocummingtonite Information : Chemical Formula: (Mg,Fe++)7Si8O22(OH)2 : Composition: Molecular Weight = 836.02 gm Magnesium 15.26 % Mg 25.31 % MgO: Iron 11.69 % Fe 15.04 % FeO: Silicon 26.88 % Si 57.50 % SiO 2: Hydrogen 0.24 % H 2.15 % H 2 O: Oxygen 45.93 % O: 100.00 % 100.00 % = TOTAL OXIDE
  • CUMMINGTONITE (Magnesium Iron Silicate Hydroxide)

    www.galleries.com/Cummingtonite Cummingtonite is the name of a series as well as the name of a mineral. The mineral cummingtonite, is basically the middle member of the Cummingtonite Series, which include the minerals grunerite and magnesiocummingtonite. All three minerals' formulae are essentially the same: (Mg, Fe)7Si8O22(OH)2. However the percentage of magnesium to iron varies in the series and determines the mineral ...
  • Magnesiocummingtonite: Mineral information, data and ...

    www.mindat.org/min-2489.html Look for Magnesiocummingtonite images on Google; Quick NavTop Internet Links . Mineral and/or Locality . Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
  • Magnesio-cummingtonite (Mg Fe2+ (Mg Fe2+ Si 2 5 8 22 2

    www.handbookofmineralogy.org/pdfs/Magnesiocummingtonite.pdf Magnesiocummingtonite.PDF Author: cschuh Created Date: 8/19/2001 12:51:35 AM ...
  • Category:Cummingtonite - Wikimedia Commons

    commons.wikimedia.org/wiki/Category:Cummingtonite Media in category "Cummingtonite" The following 7 files are in this category, out of 7 total. Amphibole - Cummingtonite w- chlorite in schist Magnesium iron silicate 3800 foot level Homestake Mine Lawrence COunty South Dakota 2071.jpg 568 × 470; 93 KB
  • Cummingtonite: Mineral information, data and localities.

    www.mindat.org/min-1170.html Cummingtonite is defined as a monoclinic amphibole belong to the magnesium-iron-manganese amphibole subgroup. ... Swanson,Samuel E. (2008) Magnesiocummingtonite in Metadunites from the Spruce Pine Mining District,Western North Carolina
  • Cummingtonite Mineral Data

    webmineral.com/data/Cummingtonite.shtml Fischer K F , American Mineralogist , 51 (1966) p.814-818, A further refinement of the crystal structure of cummingtonite, (Mg,Fe)7(Si4O11)2(OH)2 View Additional jPOWD Structure files for Cummingtonite
  • Facts About Rhodium | Live Science

    www.livescience.com/36988-rhodium.html Rhodium is a silver-white metallic element that is highly reflective and resistant to corrosion. It is considered the rarest and most valuable precious metal in the world — well above gold or ...