• Geffroyite Mineral Data

    webmineral.com/data/Geffroyite.shtml General Geffroyite Information : Chemical Formula: (Ag,Cu,Fe)9(Se,S)8 : Composition: Molecular Weight = 1,342.22 gm Iron 3.74 % Fe: Copper 12.78 % Cu: Silver 43.40 % ...
  • Geffroyite dictionary definition | geffroyite defined

    www.yourdictionary.com/geffroyite geffroyite definition: Noun 1. (mineralogy) An isometric-hexoctahedral bronze brown mineral containing copper, iron, selenium, silver, and sulfur.Origin -ite...
  • Geffroyite Mineral Data - Mineralogy Database

    webmin.mindat.org/data/Geffroyite.shtml General Geffroyite Information : Chemical Formula: (Ag,Cu,Fe)9(Se,S)8 : Composition: Molecular Weight = 1,342.22 gm Iron 3.74 % Fe: Copper 12.78 % Cu: Silver 43.40 % ...
  • What does geffroyite mean? - definitions

    www.definitions.net/definition/geffroyite Definition of geffroyite in the Definitions.net dictionary. Meaning of geffroyite. What does geffroyite mean? Information and translations of geffroyite in the most comprehensive dictionary definitions resource on the web.
  • geffroyite - Wiktionary

    en.wiktionary.org/wiki/geffroyite geffroyite An isometric-hexoctahedral bronze brown mineral containing copper, iron, selenium, silver, and sulfur. References “Geffroyite” in David Barthelmy, Webmineral Mineralogy Database, 1997–.
  • Geffroyite Mineral Specimen For Sale - Dakota Matrix Minerals

    www.dakotamatrix.com/products/10995/geffroyite Geffroyite - Dark, dull grey grains in matrix. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.
  • Verification - Mindat.org

    www.mindat.org/min-1667.html Large number of pages viewed. While we don't want to limit you viewing as many pages as you would like on mindat.org, we do need to prevent people from automated downloads of our content.
  • Anagrams for geffroyite?

    www.anagrams.net/geffroyite This page list all the various possible anagrams for the word geffroyite. Use it for solving word puzzles, scrambles and for writing poetry, lyrics for your song or coming up with rap verses. (Noun) An isometric-hexoctahedral bronze brown mineral containing copper, iron, selenium, silver, and sulfur. more on ...
  • Evolution paragénétique de la minéralisation uranifère de ...

    link.springer.com/article/10.1007/BF01084639 Geffroyite, (Cu, Fe, Ag) 9 (Se, S) 8, cubic,Fm3m,a=10.889 Å,Z=4; pentlandite-like structure. Calculated density 5.39 g/cm 3. The strongest lines in the X-ray powder pattern are: 9 3.282 (311); 9 3.145 (222); 6 2.094 (511; 333); 10 1.925 (440); 5 1.660 (533); 6 1.112 (844). Vickers microhardness 70 kg/mm 2. In reflected light, it has a brown ...
  • Geffroyite (Cu Fe Ag)9(Se S)8

    www.handbookofmineralogy.com/pdfs/geffroyite.pdf Geffroyite (Cu,Fe,Ag)9(Se,S)8 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Cubic. Point Group: 4/m 32/m. Commonly in a micro-myrmekitic intergrowth, to 0.7 mm, with clausthalite and eskebornite.