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Results 2361 - 2370 of 2438 for Quartz
  • Dreyerite - Occurrence, Properties, and Distribution
    Article - 3 Jun 2014
    Dreyerite was named after Gerhard Dreyer, Assistant Professor, Johannes Guterberg University, Mainz, Germany, who discovered the mineral from Hirschhorn, near Kaiserlautern, Rhineland-Palatinate,...
  • Dervillite - Occurrence, Properties, and Distribution
    Article - 3 Jun 2014
    Dervillite is a monoclinic-prismatic brownish black mineral containing sulfur, silver and arsenic. It was named after Dr. Henri Dervile of Strasbourg University, Strasbourg, France who observed the...
  • Perroudite - Occurrence, Properties, and Distribution
    Article - 28 May 2014
    Perroudite has an orthorhombic crystal system. It was first discovered in Cap-Garonne, Var, France in 1992. It was named for Pierre Perroud, Professor at Voltaire College, Geneva, Switzerland for his...
  • Pretulite - Occurrence, Properties, and Distribution
    Article - 26 Sep 2013
    Pretulite belongs to Xenotime family. It was first discovered in 1996 from Hollkogel, Austria. It was named for the mountain Pretulalpe, Austria, on which the mineral was first discovered.
  • Wheatleyite - Occurrence, Properties, and Distribution
    Article - 28 May 2014
    Wheatleyite is a triclinic-pinacoidal blue mineral containing sodium, oxygen, hydrogen, copper and carbon. It was first observed in Wheatley mine, near Phoenixville, Chester Co., Pennsylvania, USA. It...
  • Yushkinite - Occurrence, Properties, and Distribution
    Article - 28 May 2014
    Yushkinite is a trigonal-ditrigonal pyramidal mineral containing vanadium, sulfur, oxygen, magnesium, hydrogen and aluminum. It is a member of valleriite group. It was first observed in Pay-Khoy, in...
  • Umohoite - Occurrence, Properties, and Distribution
    Article - 29 May 2014
    Umohoite having a triclinic crystal system was first discovered in Utah, USA. It was named for the composition uranyl, molybdate, hydrogen and oxygen.
  • Tancoite - Occurrence, Properties, and Distribution
    Article - 2 Jun 2014
    Tancoite was first discovered in the Tanco Mine (pegmatite), Bernic Lake, Manitoba, Canada. It was named after its discovery locality.
  • Fluorite - Occurrence, Properties, and Distribution
    Article - 26 Sep 2013
    Fluorite is a halide mineral composed of calcium fluoride. It has an isometric system with a cubic habit. The mineral derived its name from the Latin word fluere, which means ‘to flow’.
  • Surinamite - Occurrence, Properties, and Distribution
    Article - 3 Jun 2014
    Surinamite is a monoclinic blue green crystal that was first discovered in the Bakhuis Mountains. It is a member of sapphirine supergroup of minerals. It was named after Surinam where the mineral was...

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