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Mineral Index - R

• Rúþen
  syn. of Ruthenium

• Raadeite
  Monoclinic
  Mg₇(PO₄)₂(OH)₈
• Rabbittite
  Monoclinic
  Ca₃Mg₃(UO₂)₂[(OH)₄|(CO₃)₆] · 18H₂O
• Rabejacite
  Orthorhombic
  Ca(UO₂)₄(SO₄)₂(OH)₆ · 6H₂O

• Radauite
  syn. of Labradorite

• Rädelerz
  syn. of Bournonite

• Radhakrishnaite
  Tetragonal
  PbTe₃(Cl,S)₂

• Radial Willemite
  var. of Willemite

• Radian Barite
  var. of Baryte
  Orthorhombic
  (Ba,Ra)SO₄

• Radiated Pyrites
  syn. of Marcasite

• Radiobarite
  syn. of Radian Barite

• Radiobaryte
  syn. of Radian Barite

• Radiolite Opal
  var. of Opal

• Radio Opal
  syn. of Radiolite Opal

• Radiophyllite
  syn. of Zeophyllite

• Radiotine
  var. of Serpentine Group

• Radium Diamond
  syn. of Smoky Quartz

• Radiumite
  mixture of Gummite, Pitchblende, Uranophane

• Rädlerz
  syn. of Bournonite

• Radovanite
  Orthorhombic
  Cu₂Fe³⁺[(As³⁺O₂(OH)]₂[As⁵⁺O₄]·H₂O
• Radtkeite
  Orthorhombic
  Hg²⁺₃[Cl|I|S₂]

• Raf
  syn. of Amber

• Rafaelite
  var. of Asphaltum

• Rafaëlit (of Arzruni and Thaddéeff)
  syn. of Paralaurionite

• Raguinite
  Orthorhombic
  TlFeS₂

• Raimondite
  syn. of Jarosite, Natrojarosite

• Rainbow Agate
  syn. of Fire Agate

• Rainbow Aura
  var. of Aqua Aura

• Rainbow Calsilica
  An artifical material created for carving/lapidary purposes. Contains a mixture of calcite, plastic and artifical colouring pigments (PB15, an art-supply pigment), and a paraffin-like material. [ref: Winter 2002, Gems and Gemology, journal of ...

• Rainbow Obsidian
  var. of Obsidian

• Rainbow Opal
  syn. of Precious Opal

• Raite
  Orthorhombic
  Na₄Mn²⁺₃Ti_0.25Si₈O₂₀(OH)₂·10H₂O
• Rajite
  Monoclinic
  Cu[Te⁴⁺₂O₅]
• Ralstonite
  Isometric
  NaMgAl(F,OH)₆·H₂O

• Ram
  syn. of Copper

• Ramanite-(Cs)
  Monoclinic
  Cs[B₅O₆(OH)₄]·2H₂O
• Ramanite-(Rb)
  Orthorhombic
  Rb[B₅O₆(OH)₄]·2H₂O
• Rambergite
  Hexagonal
  MnS
• Ramdohrite
  Monoclinic
  (Cd,Mn,Fe)Ag_5.5Pb₁₂Sb_21.5S₄₈

• Ramdohrite-Lillianite Group
  group name

• Rame
  syn. of Copper

• Rameauite
  Monoclinic
  K₂Ca(UO₂)₆(OH)₁₆ · H₂O

• Rame carbonato azzurro
  syn. of Azurite

• Rame carbonato verde
  syn. of Malachite

• Rame giallo
  syn. of Chalcopyrite

• Rame grigio
  syn. of Chalcocite

• Rame nero
  syn. of Tenorite

• Rami
  syn. of Copper

• Ramirite
  syn. of Descloizite

• Rammelsbergite
  Orthorhombic
  NiAs₂

• Rammelsbergite (of Dana)
  syn. of Rammelsbergite

• Rammelsbergite (of Haidinger)
  syn. of Chloanthite

• Ramsayite
  syn. of Lorenzenite

• Ramsbeckite
  Monoclinic
  (Cu,Zn)₁₅[(OH)₂₂|(SO₄)₄] · 6H₂O
• Ramsdellite
  Orthorhombic
  Mn⁴⁺O₂

• Ramu
  syn. of Copper

• Ramzaite
  syn. of Lorenzenite

• Ranciéite
  Trigonal
  (Ca,Mn)Mn₄O₉·3H₂O

• Ranciéite-Takanelite Series
  a series between Ranciéite and Takanelite
  Hexagonal

• Ranciérite
  syn. of Ranciéite

• Randanite
  syn. of Randannite

• Randannite
  var. of Diatomite

• Randite
  mixture of Calcite, Kaolinite, Tyuyamunite

• Randomite
  syn. of Nordstrandite

• Ranite
  syn. of Gonnardite

• Rankachite
  Monoclinic
  (V⁴⁺,V⁵⁺)(W⁶⁺,Fe³⁺)₂O₈(OH)•(Ca_xH₂O_y) with x ~ 0.5, y ~ 2.
• Rankamaite
  Orthorhombic
  (Na,K,Pb,Li)₃(Ta,Nb,Al)₁₁(O,OH)₃₀
• Rankinite
  Monoclinic
  Ca₃Si₂O₇

• Ranquilite
  syn. of Haiweeite

• Ransätite
  Incompletely characterised, doubtful mineral. Originally reported from Bliabergen, Ransäter, Munkfors, Värmland, Sweden.
  near (Mn,Ca,Mg)₃(Fe³⁺,Al)₄Si₆O₂₁

• Ransomite
  Monoclinic
  CuFe₂(SO₄)₄·6H₂O
• Ranunculite
  Monoclinic
  HAlUO₂PO₄(OH)₃·4H₂O

• Raphilite
  syn. of Tremolite

• Raphite
  syn. of Ulexite

• Rapidcreekite
  Orthorhombic
  Ca₂[CO₃|SO₄] · 4H₂O