Group 4 - Oxides and Hydroxides
ⓘ	Goethite	4.00.	α-Fe³⁺O(OH)
ⓘ	Chromite var. Aluminian Chromite	4.BB.05	Fe(Cr,Al)₂O₄
ⓘ		4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Maghemite	4.BB.15	(Fe³⁺_0.67◻_0.33)Fe³⁺₂O₄
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Lithiophorite	4.FE.25	(Al,Li)MnO₂(OH)₂
ⓘ	Asbolane	4.FL.30	(Ni,Co)_2-xMn⁴⁺(O,OH)₄ · nH₂O
Group 5 - Nitrates and Carbonates
ⓘ	Magnesite	5.AB.05	MgCO₃
Group 9 - Silicates
ⓘ	Chrysotile	9..	Mg₃(Si₂O₅)(OH)₄
ⓘ	Talc	9.EC.05	Mg₃Si₄O₁₀(OH)₂
ⓘ	'Pimelite'	9.EC.22	Ni₃Si₄O₁₀(OH)₂ · 4H₂O
ⓘ	Nontronite	9.EC.40	Na_0.3Fe₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O
ⓘ	Saponite	9.EC.45	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
ⓘ	Vermiculite	9.EC.50	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
ⓘ	Kaolinite	9.ED.05	Al₂(Si₂O₅)(OH)₄
ⓘ	Lizardite	9.ED.15	Mg₃(Si₂O₅)(OH)₄
Unclassified
ⓘ	'Limonite'	-
ⓘ	'Chlorite Group'	-
ⓘ	'Garnierite'	-
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄
ⓘ	'Olivine Group'	-	M₂SiO₄
ⓘ	'Ferritchromit'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Asbolane	(Ni,Co)_2-xMn⁴⁺(O,OH)₄ · nH₂O
H	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
H	ⓘ Goethite	α-Fe³⁺O(OH)
H	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
H	ⓘ Lithiophorite	(Al,Li)MnO₂(OH)₂
H	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
H	ⓘ Nontronite	Na_0.3Fe₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O
H	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
H	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
H	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
H	ⓘ Pimelite	Ni₃Si₄O₁₀(OH)₂ · 4H₂O
H	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
Li	Lithium
Li	ⓘ Lithiophorite	(Al,Li)MnO₂(OH)₂
C	Carbon
C	ⓘ Magnesite	MgCO₃
O	Oxygen
O	ⓘ Asbolane	(Ni,Co)_2-xMn⁴⁺(O,OH)₄ · nH₂O
O	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Goethite	α-Fe³⁺O(OH)
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
O	ⓘ Lithiophorite	(Al,Li)MnO₂(OH)₂
O	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
O	ⓘ Magnesite	MgCO₃
O	ⓘ Maghemite	(Fe³⁺_0.67◻_0.33)Fe₂³⁺O₄
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Nontronite	Na_0.3Fe₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O
O	ⓘ Quartz	SiO₂
O	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
O	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
O	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
O	ⓘ Pimelite	Ni₃Si₄O₁₀(OH)₂ · 4H₂O
O	ⓘ Chromite var. Aluminian Chromite	Fe(Cr,Al)₂O₄
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
O	ⓘ Olivine Group	M₂SiO₄
Na	Sodium
Na	ⓘ Nontronite	Na_0.3Fe₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Mg	Magnesium
Mg	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
Mg	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
Mg	ⓘ Magnesite	MgCO₃
Mg	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Mg	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Mg	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Al	Aluminium
Al	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
Al	ⓘ Lithiophorite	(Al,Li)MnO₂(OH)₂
Al	ⓘ Nontronite	Na_0.3Fe₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Al	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Al	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Al	ⓘ Chromite var. Aluminian Chromite	Fe(Cr,Al)₂O₄
Si	Silicon
Si	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
Si	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
Si	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
Si	ⓘ Nontronite	Na_0.3Fe₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Si	ⓘ Quartz	SiO₂
Si	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Si	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Si	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Si	ⓘ Pimelite	Ni₃Si₄O₁₀(OH)₂ · 4H₂O
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
Si	ⓘ Olivine Group	M₂SiO₄
Ca	Calcium
Ca	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Ti	Titanium
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Cr	ⓘ Chromite var. Aluminian Chromite	Fe(Cr,Al)₂O₄
Mn	Manganese
Mn	ⓘ Asbolane	(Ni,Co)_2-xMn⁴⁺(O,OH)₄ · nH₂O
Mn	ⓘ Lithiophorite	(Al,Li)MnO₂(OH)₂
Fe	Iron
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Goethite	α-Fe³⁺O(OH)
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Maghemite	(Fe³⁺_0.67◻_0.33)Fe₂³⁺O₄
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Nontronite	Na_0.3Fe₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Fe	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Fe	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Fe	ⓘ Chromite var. Aluminian Chromite	Fe(Cr,Al)₂O₄
Co	Cobalt
Co	ⓘ Asbolane	(Ni,Co)_2-xMn⁴⁺(O,OH)₄ · nH₂O
Ni	Nickel
Ni	ⓘ Asbolane	(Ni,Co)_2-xMn⁴⁺(O,OH)₄ · nH₂O
Ni	ⓘ Pimelite	Ni₃Si₄O₁₀(OH)₂ · 4H₂O

Localities in this Region

Brazil

Piauí
- Capitão Gervásio de Oliveira
  - São João do Piauí deposit

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List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Localities in this Region

Capitão Gervásio de Oliveira, Piauí, Brazil i
Regional Level Types
Capitão Gervásio de Oliveira Municipality
Piauí State
Brazil Country