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MINERAL CLASSIFICATION / SYSTEMATIK der MINERALE
based on E.H. Nickel & M.C. Nichols (2009), H. Strunz & E.H. Nickel (2001)
6. BORATES
6.D: Tetraborates
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6.DA. Neso-tetraborates |
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6.DA.05. Group reserved (4 Δ), (3 Δ + Tetrahedra) |
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6.DA.10. Borax (2 Δ + 2 Tetrahedra) |
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Borax | |
Na2B4O5(OH)4 · 8 H2O | |
mon., C2/c | |
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G |
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6.DA.15. Tincalconite (2 Δ + 2 Tetrahedra) |
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Tincalconite | |
Na2B4O5(OH)4 · 3 H2O | |
trig., R32 | |
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G |
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6.DA.20. Hungchaoite group (2 Δ + 2 Tetrahedra) |
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Hungchaoite | |
MgB4O5(OH)4 · 7 H2O | |
tric., P-1 | |
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A |
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6.DA.25. Fedorovskite group (2 Δ + 2 Tetrahedra) |
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Fedorovskite | |
Ca2Mg2B4O7(OH)6 | |
orth., Pbam | |
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IMA 1975-006 |
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Roweite | |
Ca2Mn2B4O7(OH)6 | |
orth., Pbam | |
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G |
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6.DA.27. Alfredstelznerite (2 Δ + 2 Tetrahedra) |
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Alfredstelznerite | |
Ca4(H2O)4[B4O4(OH)6]4 · 15 H2O | |
orth., Pbca21 | |
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IMA 2007-050 |
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6.DA.30. Hydrochlorborite group (Δ + 2 Tetrahedra + 1 Tetrahedron) |
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Hydrochlorborite | |
Ca2B4O4(OH)7Cl · 7 H2O | |
mon., I2/a | |
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G |
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6.DA.35. Uralborite group (3 Tetrahedra + 1 Tetrahedron) |
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Uralborite | |
Ca2B4O4(OH)8 | |
mon., P21/n | |
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A |
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6.DA.40. Borcarite group (4 Tetrahedra) |
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Borcarite | |
Ca4MgB4O6(OH)6(CO3)2 | |
mon., C2/m | |
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A |
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Numanoite | |
Ca4CuB4O6(OH)6(CO3)2 | |
mon., B2/m | |
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IMA 2005-050 |
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6.DB. Ino-tetraborates |
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6.DB.05. Kernite group (2 Δ + 2 Tetrahedra) |
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Kernite | |
Na2B4O6(OH)2 · 3 H2O | |
mon., P21/a | |
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G |
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G = Grandfathered minerals: original description preceded the establishment of the CNMNC in 1959, and
generally regarded as a valid species
A or IMA No. = Minerals approved by the CNMNC
Rd = Redefinition of the mineral approved by the CNMNC
Rn = Renamed with approval by the CNMNC
Q = Questionable mineral
© Thomas Witzke / Stollentroll (2007-2018)
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