Reference: Kimbara K., Nagata H. (1974) Clay minerals in the core samples of the mineralized zone of Niida, Southern part of Odate, Akita prefecture, Japan, with special reference to the mineralogical properties of sudoite and tosudite, - J. Japan Miner. Economic Geology, 69(7), p.239-254.

ⓘ Sudoite

Formula: Mg₂Al₃(Si₃Al)O₁₀)(OH)₈

ⓘ Tosudite

Formula: Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O

ⓘ Tosudite var:

Formula: Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 9 - Silicates
ⓘ	Sudoite	9.EC.55	Mg₂Al₃(Si₃Al)O₁₀)(OH)₈
ⓘ	Tosudite	9.EC.60	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
ⓘ	var: Magnesium Tosudite	9.EC.60	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
A_mB_nX_p, with (m+n):p = 1:2
ⓘ	Pyrite	2.12.1.1	FeS₂
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
ⓘ	Sudoite	71.4.1.3	Mg₂Al₃(Si₃Al)O₁₀)(OH)₈
ⓘ	Tosudite	71.4.2.4	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
Unclassified Minerals, Mixtures, etc.
ⓘ	var: Magnesium Tosudite	-	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Sudoite	Mg₂Al₃(Si₃Al)O₁₀)(OH)₈
H	ⓘ Tosudite	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
H	ⓘ Tosudite (var: Magnesium Tosudite)	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
O	Oxygen
O	ⓘ Sudoite	Mg₂Al₃(Si₃Al)O₁₀)(OH)₈
O	ⓘ Tosudite	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
O	ⓘ Tosudite (var: Magnesium Tosudite)	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
Na	Sodium
Na	ⓘ Tosudite	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
Na	ⓘ Tosudite (var: Magnesium Tosudite)	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
Mg	Magnesium
Mg	ⓘ Sudoite	Mg₂Al₃(Si₃Al)O₁₀)(OH)₈
Mg	ⓘ Tosudite	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
Mg	ⓘ Tosudite (var: Magnesium Tosudite)	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
Al	Aluminium
Al	ⓘ Sudoite	Mg₂Al₃(Si₃Al)O₁₀)(OH)₈
Al	ⓘ Tosudite	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
Al	ⓘ Tosudite (var: Magnesium Tosudite)	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
Si	Silicon
Si	ⓘ Sudoite	Mg₂Al₃(Si₃Al)O₁₀)(OH)₈
Si	ⓘ Tosudite	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
Si	ⓘ Tosudite (var: Magnesium Tosudite)	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O
S	Sulfur
S	ⓘ Pyrite	FeS₂
Fe	Iron
Fe	ⓘ Pyrite	FeS₂

References

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Kimbara K., Nagata H. (1974) Clay minerals in the core samples of the mineralized zone of Niida, Southern part of Odate, Akita prefecture, Japan, with special reference to the mineralogical properties of sudoite and tosudite, - J. Japan Miner. Economic Geology, 69(7), p.239-254.

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