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      Mixed Minerals

      Sunday, 24 May 2020 07:00 PM

      Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including atacamite, beryl, chalcopyrite, chrysocolla, fergusonite-(y), and fluorite and more from places like La Farola mine, Tierra Amarilla, Copiapó, Chile, Topaz Mountain, Thomas Range, Juab Co., Utah, United States, Picher, Tri-State Dist., Oklahoma, United States, 79 mine, Gila Co., Arizona, United States, Ruoutevare, Jokkmokk, Lappland, Sweden, and Yaogangxian mine, Chenzhou, Hunan prov., China.

      Atacamite

      #53348
      Locality
      La Farola mine, Tierra Amarilla, Copiapó, Chile 
      Formula
      Cu2Cl(OH)3 
      Availability
      Sold
      Size
      9 x 5 x 3 cm - Sm Cabinet 
      Tagged
      copper  

      Beautiful translucent, bladed crystals of Atacamite to 6mm as singles and radial groups to 1.3cm across. Ex. Willard Roberts collection.


      Atacamite

      Formula
      Cu2Cl(OH)3 
      Crystal System
      Orthorhombic 
      Crystal Habit
      Euhedral Crystals, Fibrous, Granular 
      Cleavage
      Perfect, None, None 
      Luster
      Adamantine 
      Color
      green, yellow, yellow green, black green 
      Streak
      apple green 
      Class
      Orthorhombic - Dipyramidal 
      Fracture
      Conchoidal 
      Hardness
      3-3.5 
      Mineralpedia
      View Atacamite
      On Dakota Matrix
      Previously Sold Atacamite
      On Dakota Matrix
      Other Available Atacamite
      WebMineral
      View Atacamite
      Mindat
      View Atacamite
      SOLD
      Beryl - AH53353
      Beryl - AH53353

      Beryl

      #AH53353
      Locality
      Topaz Mountain, Thomas Range, Juab Co., Utah, United States 
      Formula
      Be3Al2Si6O18 
      Availability
      Sold
      Size
      0.5 x 0.5 x 0.5 cm - Thumbnail 
      Tagged
      beryllium  

      Murky red with whiteish tips in places. Hexagonal 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 
      Collection
      Arnold G Hampson Collection
      Mineralpedia
      View Beryl
      On Dakota Matrix
      Previously Sold Beryl
      On Dakota Matrix
      Other Available Beryl
      WebMineral
      View Beryl
      Mindat
      View Beryl

      Chalcopyrite

      on Dolomite - #53345
      Locality
      Picher, Tri-State Dist., Oklahoma, United States 
      Formula
      Cu1+Fe3+S2 
      Availability
      Sold
      Size
      5.5 x 4.5 x 3.5 cm - Sm Cabinet 
      Tagged
      sulfide , copper  

      Excellent tetrahedral goldish crystals of Chalcopyrite to 6mm on Dolomite.


      Chalcopyrite

      Formula
      Cu1+Fe3+S2 
      Crystal System
      Tetragonal 
      Crystal Habit
      Euhedral Crystals, Striated, Druse 
      Cleavage
      Indistinct, None, None 
      Luster
      Metallic 
      Color
      brass yellow, honey yellow 
      Streak
      greenish black 
      Class
      Tetragonal - Scalenohedral 
      Fracture
      Brittle 
      Hardness
      3.5 

      Chrysocolla

      ps after Aurichalcite - #AH53218
      Locality
      79 mine, Gila Co., Arizona, United States 
      Formula
      (Cu,Al)2H2Si2O5(OH)4·nH2
      Availability
      Sold
      Size
      5 x 3 x 2.5 cm - Miniature 
      Tagged
      copper  

      A stunning specimen with blades of former Aurichalcite replaced by Chrysocolla with spherical Rosasite. Really really fun to view under the scope.


      Chrysocolla

      Formula
      (Cu,Al)2H2Si2O5(OH)4·nH2
      Crystal System
      Orthorhombic 
      Crystal Habit
      Botryoidal, Earthy, Stalactitic 
      Cleavage
      None, None, None 
      Luster
      Vitreous - Dull 
      Color
      green, bluish green, blue, blackish blue, brown 
      Streak
      light green 
      Class
      Orthorhombic 
      Fracture
      Brittle - Sectile 
      Hardness
      2.5-3.5 
      Collection
      Arnold G Hampson Collection

      Fergusonite-(Y)

      #39106
      Locality
      Ruoutevare, Jokkmokk, Lappland, Sweden 
      Formula
      YNbO4 
      Availability
      Sold
      Size
      6.5 x 4 x 2.5 cm - Sm Cabinet 
      Tagged
      REE mineral , pegmatite mineral  

      This black bladed crystals running through pegmatite matrix.


      Fergusonite-(Y)

      Formula
      YNbO4 
      Crystal System
      Tetragonal 
      Crystal Habit
      Prismatic, Metamict 
      Cleavage
      Indistinct, None, None 
      Luster
      Sub Metallic 
      Color
      black, black, brown, gray, yellow 
      Streak
      brown 
      Class
      Tetragonal - Dipyramidal 
      Fracture
      Sub Conchoidal 
      Hardness
      5.5-6 

      Fluorite

      with Wolframite & Arsenpyrite - #AH53316
      Locality
      Yaogangxian mine, Chenzhou, Hunan prov., China 
      Formula
      CaF2 
      Availability
      Available
      Price
      $40.00
      Size
      5 x 4.5 x 4 cm - Miniature 

      Green from light to richer green and light purple Fluorite crystals to 2.2cm with 2cm Wolframite bladed crystals and 6mm Arsenopyrite crystals. 


      Fluorite

      Formula
      CaF2 
      Crystal System
      Isometric 
      Crystal Habit
      Crystalline - Coarse, Massive - Granular, Disseminated 
      Cleavage
      Three perfect, octahedral cleavages. 
      Luster
      Vitreous (Glassy) 
      Color
      purple, clear, yellow, green, red, blue 
      Streak
      white 
      Geological Setting
      Occurs in a wide range of geologic environments including low temperature Missississippi Valley lead-zinc deposits, hydrothermal gold deposits, Alpine cleft metamorphic environments  
      Class
      Isometric - Hexoctahedral 
      Fracture
      Uneven 
      Hardness
      Collection
      Arnold G Hampson Collection
      Mineralpedia
      View Fluorite
      On Dakota Matrix
      Previously Sold Fluorite
      On Dakota Matrix
      Other Available Fluorite
      WebMineral
      View Fluorite
      Mindat
      View Fluorite

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