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      Mixed Minerals

      Friday, 03 July 2020 06:00 PM

      Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including adamite, almandine, alstonite, beryl, and caledonite and more from places like Mina Ojuela, Mapimi, Durango, Mexico, Roxbury Falls mine, Roxbury Falls, Connecticut, United States, Needle Mountains, La Plata Co., Colorado, United States, Musco, near Bogota, Colombia, Wah Wah Mts, Beaver Co., Utah, United States, and Hard Scramble claim, near Baker, San Bernardino Co., California, United States.

      Adamite

      #AH52215
      Locality
      Mina Ojuela, Mapimi, Durango, Mexico 
      Formula
      Zn2AsO4(OH) 
      Availability
      Sold
      Size
      4 x 2.6 x 2.2 cm - Miniature 
      Tagged
      arsenate  

      Hemispherical groups of bright yellowish-green Adamite crystals.


      Adamite

      Formula
      Zn2AsO4(OH) 
      Crystal System
      Orthorhombic 
      Crystal Habit
      Tabular, Druse, Encrustations 
      Cleavage
      One Good 
      Luster
      Vitreous - Resinous 
      Color
      yellow, green, violet, pink, yellowish green 
      Streak
      white 
      Class
      Orthorhombic - Dipyramidal 
      Fracture
      Brittle 
      Hardness
      3.5 
      Collection
      Arnold G Hampson Collection
      Mineralpedia
      View Adamite
      On Dakota Matrix
      Previously Sold Adamite
      On Dakota Matrix
      Other Available Adamite
      WebMineral
      View Adamite
      Mindat
      View Adamite

      Almandine

      #AH53646
      Locality
      Roxbury Falls mine, Roxbury Falls, Connecticut, United States 
      Formula
      Fe2+3Al2(SiO4)3 
      Availability
      Sold
      Size
      4.5 x 3 x 4 cm - Miniature 

      A 1.6cm dodecahedral crystal perched nicely on schist matrix. Collected in 1945 by Arnold Hampson.


      Almandine

      Formula
      Fe2+3Al2(SiO4)3 
      Crystal System
      Isometric 
      Crystal Habit
      Equant crystals, rounded grains, typically well-formed dodecahedra or trapezohedra 
      Cleavage
      None 
      Luster
      Vitreous - Resinous 
      Color
      brown, brownish red, red, black, black red 
      Streak
      white 
      Class
      Isometric - Hexoctahedral 
      Fracture
      Brittle - Conchoidal 
      Hardness
      7-8 
      Collection
      Arnold G Hampson Collection
      Mineralpedia
      View Almandine
      On Dakota Matrix
      Previously Sold Almandine
      On Dakota Matrix
      Other Available Almandine
      WebMineral
      View Almandine
      Mindat
      View Almandine

      Alstonite

      var. bromlite on Calcite - #BC52671
      Locality
      Needle Mountains, La Plata Co., Colorado, United States 
      Formula
      BaCa(CO3)2 
      Availability
      Sold
      Size
      4 x 2.5 x 2.5 cm - Miniature 
      Tagged
      carbonate  

      Yellow micro crystals on Calcite, formerly a variety of Alstonite called "bromlite".


      Alstonite

      Formula
      BaCa(CO3)2 
      Crystal System
      Triclinic 
      Crystal Habit
      Euhedral Crystals, Pseudo Hexagonal 
      Cleavage
      Imperfect, None, None 
      Luster
      Vitreous (Glassy) 
      Color
      colorless, gray, white, pink 
      Streak
      white 
      Class
      Triclinic 
      Fracture
      Uneven 
      Hardness
      4-4.5 
      Collection
      Barbara Cureton Collection
      Mineralpedia
      View Alstonite
      On Dakota Matrix
      Previously Sold Alstonite
      On Dakota Matrix
      Other Available Alstonite
      WebMineral
      View Alstonite
      Mindat
      View Alstonite

      Beryl

      var. emerald - #BC52653
      Locality
      Musco, near Bogota, Colombia 
      Formula
      Be3Al2Si6O18 
      Availability
      Sold
      Size
      5.5 x 4 x 3 cm - Sm Cabinet 
      Tagged
      beryllium  

      Prismatic green crystals to 1.5cm on mica schist.


      Beryl

      Formula
      Be3Al2Si6O18 
      Crystal System
      Hexagonal 
      Crystal Habit
      Crystalline - Coarse, Prismatic, Columnar 
      Cleavage
      Imperfect, None, None 
      Luster
      Vitreous - Resinous 
      Color
      green, blue, yellow, colorless, pink 
      Streak
      white 
      Class
      Hexagonal - Dihexagonal Dipyramidal 
      Fracture
      Brittle - Conchoidal 
      Hardness
      7.5-8 
      Collection
      Barbara Cureton Collection
      Mineralpedia
      View Beryl
      On Dakota Matrix
      Previously Sold Beryl
      On Dakota Matrix
      Other Available Beryl
      WebMineral
      View Beryl
      Mindat
      View Beryl

      Beryl

      #46926
      Locality
      Wah Wah Mts, Beaver Co., Utah, United States 
      Formula
      Be3Al2Si6O18 
      Availability
      Sold
      Size
      3.2 x 2.5 x 1.5 cm - Miniature 
      Tagged
      beryllium  

      An 8mm single red Beryl 7mm crystal knocked out of white rhyolite matrix. I decided not to repair this specimen and let the owner repair it. It would only take a tiny drop of glue. The last two photos you can see the impression from the crystal. 


      Beryl

      Formula
      Be3Al2Si6O18 
      Crystal System
      Hexagonal 
      Crystal Habit
      Crystalline - Coarse, Prismatic, Columnar 
      Cleavage
      Imperfect, None, None 
      Luster
      Vitreous - Resinous 
      Color
      green, blue, yellow, colorless, pink 
      Streak
      white 
      Class
      Hexagonal - Dihexagonal Dipyramidal 
      Fracture
      Brittle - Conchoidal 
      Hardness
      7.5-8 
      Mineralpedia
      View Beryl
      On Dakota Matrix
      Previously Sold Beryl
      On Dakota Matrix
      Other Available Beryl
      WebMineral
      View Beryl
      Mindat
      View Beryl

      Caledonite

      with Linarite - #BC52724
      Locality
      Hard Scramble claim, near Baker, San Bernardino Co., California, United States 
      Formula
      Cu2Pb5(SO4)3(CO3)(OH)6 
      Availability
      Sold
      Size
      6 x 5 x 3 cm - Sm Cabinet 
      Tagged
      carbonate , copper  

      Tight clusters of 1-4mm blue Caledonite crystals with darker blue Linarite. The two minerals are quite intergrown. Excellent specimen viewed under the scope. Formerly in the Jack Parnau collection.


      Caledonite

      Formula
      Cu2Pb5(SO4)3(CO3)(OH)6 
      Crystal System
      Orthorhombic 
      Crystal Habit
      Prismatic, Radial, Striated 
      Cleavage
      Perfect, Distinct, None 
      Luster
      Vitreous - Greasy 
      Color
      blue, blue green, green, dark green 
      Streak
      greenish white 
      Class
      Orthorhombic - Pyramidal 
      Fracture
      Uneven 
      Hardness
      2.5-3 
      Collection
      Barbara Cureton Collection

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