• Pumpellyite - Wikipedia

    en.wikipedia.org/wiki/Pumpellyite pumpellyite-(Al): Ca 2 (Al,Fe 2+ ,Mg)Al 2 [(OH,O) 2 |SiO 4 |Si 2 O 7 ]·H 2 O Pumpellyite crystallizes in the monoclinic -prismatic crystal system. It typically occurs as blue-green to olive green fibrous to lamellar masses. It is translucent and glassy with a Mohs hardness of 5.5 and a specific gravity of 3.2.
  • Pumpellyite-(Mg) Mineral Data

    webmineral.com/data/Pumpellyite-(Mg).shtml Visit our Advertisers for Pumpellyite-(Mg) : Dakota Matrix Minerals Google Search for Pumpellyite-(Mg) John Betts Fine Minerals Search for Pumpellyite-(Mg) McDougall Minerals Google Search for Pumpellyite-(Mg) Rock and Mineral Shows Google Search for Pumpellyite-(Mg) Weinrich Minerals, Inc. Google Search for Pumpellyite-(Mg)
  • Pumpellyite-(Mg): Mineral information, data and localities.

    www.mindat.org/min-3309.html Named in 1925 by Charles Palache and Helen E. Vassar in honor of US geologist, Raphael Pumpelly [September 8, 1837 Owego, New York, USA – August 10, 1923 Newport, Rhode Island, USA]. The chemical suffix was added in 1973 by the IMA. Pumpelly was an active mining consultant and was professor of Mining Science...
  • Pumpellyite-(Mg) mineral information and data

    www.dakotamatrix.com/mineralpedia/7913/pumpellyite-mg Pumpellyite-(Mg) Named for Raphael Pumpelly, a United States geologist and forerunner in the study of the paragenesis minerals in copper deposits in the Keweenaw Peninsula in Michigan, USA. Additionally named for its magnesium content over other minerals.
  • Pumpellyite: The mineral pumpellyite information and picture

    www.minerals.net/mineral/pumpellyite.aspx Pumpellyite is a group of closely related minerals that have a minor of variation of elements among members. Pumpellyite-(Mg) and Pumpellyite-(Fe 2+) are the most common members, with the other members being rare. In addition to members that have the name designation of Pumpellyite with an added chemical suffix, there are additional extended Pumpellyite group members not discussed in this guide that have their own unique names.
  • Pumpellyite-(Mg) Ca2MgAl2(SiO4)(Si2O7)(OH)2 H2O

    www.handbookofmineralogy.org/pdfs/pumpellyite-(Mg).pdf Pumpellyite-(Mg) Ca2MgAl2(SiO4)(Si2O7)(OH)2² H2O °c 2001 Mineral Data Publishing, version 1.2 Crystal Data: Monoclinic. Point Group: 2=m: Crystals bladed, typically elongated along [010]; in stellate clusters, ¯brous, or dense mats. Twinning: Common on f001g and f100g. Physical Properties: Cleavage: Distinct on f001g and f100g. Hardness = 5.5
  • Wisconsin Geological & Natural History Survey ...

    wgnhs.wisc.edu/minerals/pumpellyitegroup Formula: Ca 2 (Fe 2+,Mg)Al 2 (SiO4)(Si 2 O 7)(OH) 2.H 2 O Monoclinic. Description: Pumpellyite is used to denote a group of closely related minerals that form during relatively low grade burial metamorphism. It is often associated with prehnite, epidote and chlorite. It is most common in metamorphosed basalts. Most Wisconsin pumpellyite is likely Pumpellyite-(Mg).
  • Mineralienatlas Lexikon - Pumpellyite-(Mg) (english Version)

    www.mineralatlas.eu/lexikon/index.php/MineralData Mineral Data, Mineralienatlas Lexikon, Pumpellyite-(Mg) Mineralienatlas - Fossilienatlas. Overview Homepage Linklist Calendar Collector's characteristics History of Mineralienatlas Howto sponsor Our sponsores Search Search term inside Encyclopedia Full-text search ...
  • Pumpellyite-(Mn++) Mineral Data

    webmineral.com/data/Pumpellyite-(Mn++).shtml General Pumpellyite-(Mn++) Information : Chemical Formula: Ca2(Mn++,Mg)(Al,Mn+++,Fe)2(SiO4)(Si2O7(OH)2•(H2O) Composition: Molecular Weight = 504.86 gm Calcium 15.88 % Ca 22.22 % CaO Magnesium 1.20 % Mg 2.00 % MgO Manganese 16.32 % Mn 10.54 % MnO / 11.73 % Mn 2 O 3 Aluminum 5.34 % Al 10.10 % Al 2 O 3
  • Chlorastrolite - Wikipedia

    en.wikipedia.org/wiki/Chlorastrolite Chlorastrolite also known as Isle Royale Greenstone, is a green or bluish green stone. Chlorastrolite has finely radiating or stellate (for examples, see crystal habits) masses that have a "turtleback" pattern. The stellate masses tend to be chatoyant, meaning they have a varying luster.