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  Elements | Sulphides | Halides | Oxides | Carbonates | Borates | Sulfates |
  Phosphates | Silicates | Organic Compounds | Rocks & Meteorites
  
 A |
B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |  U | V | W | X | Y | Z |
 
日月星水晶屋 Sun Moon Star Crystal House  R 日月星水晶屋 Sun Moon Star Crystal House
  Name Formula/Composition Crystal System Hardness SG Type
  Rammelsbergite 斜方砷鎳礦 NiAs2 Orthorhombic 5.5-6 7.1 Sulphides
  Ramsdellite 直錳礦 MnO2 Orthorhombic 3 4.37 Oxides 
  Rathite
斜方砷鉛礦/灰砷鉛礦/雙砷硫鉛礦
(Pb,Tl)3As5S10 Monoclinic 3 5.3 Sulphides
Realgar 雄黃 AsS Monoclinic 1.5-2 3.6 Sulphides
  Regionally Metamorphosed Rocks
區域變質岩
        Rocks & Meteorites
  Rhodizite 硼鋰鈹礦 (K,Cs)Al4Be4(B,Be)12O28 Cubic 8.5 3.5 Borates
Rhodochrosite 菱錳礦/紅紋 MnCO3 Trigonal 3.5-4 3.6 Carbonates
  Rhodolite 玫瑰榴石 (Mg,Fe)3Al2(SiO4)3 Cubic 7-7.5 3.7-4.2 Silicates
Rhodonite 薔薇輝石 CaMn4Si3O9 Triclinic 5.5-6.5 3.7 Silicates
  Rhyolite 流紋岩
Rhyolite is a type of volcanic magma, main composition is Quartz & Alkaline Feldspars
      Rocks & Meteorites
  Richterite 鈉透閃石/錳閃石 Na2Ca(Mg,Fe,Al)5(SiAl)8O22(OH,F)2 Monoclinic 5-6 3.1 Silicates
  Riebeckite 鈉閃石 Na(Fe2+,Mg)3Fe3+2Si8O22(OH)2 Monoclinic 5 3.4 Silicates
  Ripidolite 鐵綠泥石 (Mg,Fe,Al)6(Al,Si)4O10(OH)8 Monoclinic     Silicates
  Rockbridgeite 鐵錳綠鐵礦 Fe2+Fe3+4(PO4)3(OH)5 Orthorhombic 4.5 3.4 Phosphates
Rock Crystal 白水晶 SiO2 Trigonal 7 2.65 Oxides 
  Rosasite 綠銅鋅礦/鋅孔雀石 (Cu,Zn)2(CO3)(OH)2 Monoclinic 4.5 4.0-4.2 Carbonates
Rose Quartz 粉晶 SiO2 Trigonal 7 2.65 Oxides
  Rossmanite 羅斯曼石/羅氏電氣石 LiAl2Al6(BO3)3Si6O18(OH)4 Trigonal 7 3.1 Silicates
Rubellite 紅色電氣石/紅寶電氣石 Na(Mg,Fe,Mn,Li,Al)3Al6(BO3)Si6O18(OH,F)4 Trigonal 7-7.5 3.03-3.25 Silicates
Ruby 紅寶石 Al2O3 Trigonal 9 3.97-4.05 Oxides
  Rutilated Quartz/Hair Quartz 髮晶 SiO2 Trigonal 7 2.65 Oxides
Rutile 金紅石 TiO2 Tetragonal 6-6.5 4.2 Oxides

Reference:
The Complete Encyclopedia of Minerals |
Gemstones of the World | 岩石與礦物圖鑑
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