The Maojun laterite Fe–Mn deposit consists of two main ore bodies: the I ore body extends in a NE–SW direction, while the II ore body extends in a NW–SE direction. The ore bodies’ orientation is influenced by two sets of fissures with NE–SW and NW–SE directions. The ore body is narrowly or weakly mineralized in the area where the joints are not developed. The stratified and stratiform ore body has nearly horizontal occurrence with thickness ranging from 0 to 35 m, with typical values of 15 to 30 m. The karstification is deep in the Maojun mine area, and as a result, the surface morphology of the underlying bedrock appears as unevenly dissolved landforms. The top of the bedrock is undulating, and many dissolution fissures and holes have developed in the earthy Fe–Mn-bearing ore layer. From the bottom to the top of the regolith, the various horizons are identified as bedrock (ferromanganese dolomite and dolomitic limestone), soft black–brown clay (clay soil rich in Fe–Mn oxide), red clay (clay soil containing tiny particles of Fe–Mn oxide) and, finally, saprolite (reddish and yellowish clay bed). The ore-bearing regolith can be divided into three zones.

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Iron

ⓘ Manganese

Mineral List

14 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

ⓘ Concretion

ⓘ Laterite

ⓘ 'Magnesian Limestone'

ⓘ Regolith

ⓘ Saprolite

Detailed Mineral List:

ⓘ Calcite

Formula: CaCO₃

References:

Zhao, Liqun, Niu, Sida, Zhou, Shangguo, Li, Lei, Huang, Fei, Wang, Yingchao, Niu, Xianglong, Chen, Tong, Mo, Lingchao, Zhang, Min (2024) New insight into genesis of the Maojun laterite Fe–Mn deposit in the Lanshan area, Hunan Province, South China: Evidence from detailed mineralogical and geochemical studies. Ore Geology Reviews, 165. 105900 doi:10.1016/j.oregeorev.2024.105900

ⓘ Chalcophanite

Formula: ZnMn⁴⁺₃O₇ · 3H₂O

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ⓘ Coronadite

Formula: Pb(Mn⁴⁺₆Mn³⁺₂)O₁₆

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ⓘ Cryptomelane

Formula: K(Mn⁴⁺₇Mn³⁺)O₁₆

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ⓘ Dolomite

Formula: CaMg(CO₃)₂

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ⓘ Goethite

Formula: α-Fe³⁺O(OH)

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ⓘ Hematite

Formula: Fe₂O₃

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ⓘ Hollandite

Formula: Ba(Mn⁴⁺₆Mn³⁺₂)O₁₆

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ⓘ 'Hollandite Supergroup'

Formula: A²⁺[M⁴⁺₆M³⁺₂]O₁₆

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ⓘ Jacobsite

Formula: Mn²⁺Fe³⁺₂O₄

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ⓘ Kaolinite

Formula: Al₂(Si₂O₅)(OH)₄

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ⓘ Kaolinite var. Fe-Kaolinite

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ⓘ 'Limonite'

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ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

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ⓘ Muscovite var. Illite

Formula: K_0.65Al_2.0[Al_0.65Si_3.35O₁₀](OH)₂

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ⓘ Pyrochroite

Formula: Mn(OH)₂

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ⓘ Pyrolusite

Formula: Mn⁴⁺O₂

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ⓘ Quartz

Formula: SiO₂

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Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Goethite	4.00.	α-Fe³⁺O(OH)
ⓘ	Jacobsite	4.BB.05	Mn²⁺Fe³⁺₂O₄
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Pyrolusite	4.DB.05	Mn⁴⁺O₂
ⓘ	Coronadite	4.DK.05a	Pb(Mn⁴⁺₆Mn³⁺₂)O₁₆
ⓘ	Cryptomelane	4.DK.05a	K(Mn⁴⁺₇Mn³⁺)O₁₆
ⓘ	Hollandite	4.DK.05a	Ba(Mn⁴⁺₆Mn³⁺₂)O₁₆
ⓘ	Pyrochroite	4.FE.05	Mn(OH)₂
ⓘ	Chalcophanite	4.FL.20	ZnMn⁴⁺₃O₇ · 3H₂O
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
Group 9 - Silicates
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	var. Illite	9.EC.15	K_0.65Al_2.0[Al_0.65Si_3.35O₁₀](OH)₂
ⓘ	Kaolinite	9.ED.05	Al₂(Si₂O₅)(OH)₄
ⓘ	var. Fe-Kaolinite	9.ED.05	Al₂(Si₂O₅)(OH)₄
Unclassified
ⓘ	'Limonite'	-
ⓘ	'Hollandite Supergroup'	-	A²⁺[M⁴⁺₆M³⁺₂]O₁₆

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Chalcophanite	ZnMn₃⁴⁺O₇ · 3H₂O
H	ⓘ Goethite	α-Fe³⁺O(OH)
H	ⓘ Muscovite var. Illite	K_0.65Al_2.0[Al_0.65Si_3.35O₁₀](OH)₂
H	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Pyrochroite	Mn(OH)₂
C	Carbon
C	ⓘ Calcite	CaCO₃
C	ⓘ Dolomite	CaMg(CO₃)₂
O	Oxygen
O	ⓘ Calcite	CaCO₃
O	ⓘ Chalcophanite	ZnMn₃⁴⁺O₇ · 3H₂O
O	ⓘ Coronadite	Pb(Mn₆⁴⁺Mn₂³⁺)O₁₆
O	ⓘ Cryptomelane	K(Mn₇⁴⁺Mn³⁺)O₁₆
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Goethite	α-Fe³⁺O(OH)
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Hollandite	Ba(Mn₆⁴⁺Mn₂³⁺)O₁₆
O	ⓘ Muscovite var. Illite	K_0.65Al_2.0[Al_0.65Si_3.35O₁₀](OH)₂
O	ⓘ Jacobsite	Mn²⁺Fe₂³⁺O₄
O	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Pyrochroite	Mn(OH)₂
O	ⓘ Pyrolusite	Mn⁴⁺O₂
O	ⓘ Quartz	SiO₂
O	ⓘ Hollandite Supergroup	A²⁺[M₆⁴⁺M₂³⁺]O₁₆
Mg	Magnesium
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Al	Aluminium
Al	ⓘ Muscovite var. Illite	K_0.65Al_2.0[Al_0.65Si_3.35O₁₀](OH)₂
Al	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	Silicon
Si	ⓘ Muscovite var. Illite	K_0.65Al_2.0[Al_0.65Si_3.35O₁₀](OH)₂
Si	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Quartz	SiO₂
K	Potassium
K	ⓘ Cryptomelane	K(Mn₇⁴⁺Mn³⁺)O₁₆
K	ⓘ Muscovite var. Illite	K_0.65Al_2.0[Al_0.65Si_3.35O₁₀](OH)₂
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Mn	Manganese
Mn	ⓘ Chalcophanite	ZnMn₃⁴⁺O₇ · 3H₂O
Mn	ⓘ Coronadite	Pb(Mn₆⁴⁺Mn₂³⁺)O₁₆
Mn	ⓘ Cryptomelane	K(Mn₇⁴⁺Mn³⁺)O₁₆
Mn	ⓘ Hollandite	Ba(Mn₆⁴⁺Mn₂³⁺)O₁₆
Mn	ⓘ Jacobsite	Mn²⁺Fe₂³⁺O₄
Mn	ⓘ Pyrochroite	Mn(OH)₂
Mn	ⓘ Pyrolusite	Mn⁴⁺O₂
Fe	Iron
Fe	ⓘ Goethite	α-Fe³⁺O(OH)
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Jacobsite	Mn²⁺Fe₂³⁺O₄
Zn	Zinc
Zn	ⓘ Chalcophanite	ZnMn₃⁴⁺O₇ · 3H₂O
Ba	Barium
Ba	ⓘ Hollandite	Ba(Mn₆⁴⁺Mn₂³⁺)O₁₆
Pb	Lead
Pb	ⓘ Coronadite	Pb(Mn₆⁴⁺Mn₂³⁺)O₁₆

Other Regions, Features and Areas containing this locality

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References

Shangguo Zhou, Qunhe Fu, and Yongji Wang (2005): Discussion on ore formation mechanism of Lanshan style oxidized Fe-Mn deposit in southern Hunan province. Contributions To Geology and Mineral Resources Research 20(s1), 108-110 (in Chinese with English abstract).

[1]Zhao, Liqun, Niu, Sida, Zhou, Shangguo, Li, Lei, Huang, Fei, Wang, Yingchao, Niu, Xianglong, Chen, Tong, Mo, Lingchao, Zhang, Min (2024) New insight into genesis of the Maojun laterite Fe–Mn deposit in the Lanshan area, Hunan Province, South China: Evidence from detailed mineralogical and geochemical studies. Ore Geology Reviews, 165. 105900 doi:10.1016/j.oregeorev.2024.105900

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Lanshan Fe-Mn deposit, Lanshan Co., Yongzhou, Hunan, ChinaiRegional Level TypesLanshan Fe-Mn depositDeposit Lanshan Co.County YongzhouPrefecture-level City HunanProvince ChinaCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Commodity List

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Rock Types Recorded

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Detailed Mineral List:

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List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Lanshan Fe-Mn deposit, Lanshan Co., Yongzhou, Hunan, China i
Regional Level Types
Lanshan Fe-Mn deposit Deposit
Lanshan Co. County
Yongzhou Prefecture-level City
Hunan Province
China Country