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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  J 日月星水晶屋 Sun Moon Star Crystal House
  Name
Formula/Composition Crystal System Hardness SG Type
  Jadeite 翡翠 NaAlSi2O6 Monoclinic 6 3.2 Silicates
  Jahnsite-(CaMnMg)
磷鐵鎂錳鈣石/水磷鐵鈣錳石
CaMnMg2Fe3+2(PO4)4(OH)4.8H2O Monoclinic ----- 2.6 Phosphates
  Jalpaite 輝銅銀礦 Ag3CuS2 Tetragonal 2-2.5 6.8 Sulphides
  Jamesonite 脆硫銻鉛礦 Pb4FeS6bS14 Monoclinic 2.5 5.8 Sulphides
  Jarosite 黃鉀鐵礬 KFe3+3(SO4)2(OH)6 Trigonal 2.5-3.5 2.9-3.3 Sulfates
Jasper 碧玉 SiO2 Trigonal 6.5-7 2.6 Oxides
  Jervisite 鈉鈧輝石 (Na,Ca,Fe2+)(Sc,Mg,Fe2+)Si2O6 Monoclinic 6 3.2 Silicates
  Jet 煤晶 Jet is a form of fossilized wood. Chemical composition is carbonaceous Amorphos 2.5-4 1.3 (大約) Organic
  Johannesenite 錳鈣輝石 CaMn2+(Si2O6) Monoclinic 6 3.56 Silicates
  Johannite 鈾銅礬 Cu(UO2)2(SO4)2(OH)2.8H2O Triclinic 2-2.5 3.3 Sulfates
  Jordanite 碲硫砷鉛礦 Pb14(As,Sb)6S23 Monoclinic 3 6.4 Sulphides
 

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