The Ludousou Au deposit is located in the northwestern part of the WQO, adjacent to the contact zone between the Dewulu quartz diorite and the Laodou quartz diorite. It hosts a gold resource exceeding 20 tonnes, with average grades ranging from 3.8 to 5.5 g/t. The exposed Ludousou quartz diorite covers an area of approximately four square kilometers and is composed primarily of plagioclase, quartz, and amphibole phenocrysts, with minor biotite. The mineralised fault systems include: (i) a thrust fault developed within the Permian Daguanshan Formation; (ii) north-trending faults within granitic rocks, subparallel to the granite–country rock contact; and (iii) secondary east-trending faults.

The Ludousou deposit is hosted within the Upper Permian slate, which is locally unconformably overlain by Upper Triassic volcanic rocks. The lower section of the Shiguan Formation consists of biotite-muscovite quartz hornfels and andalusite quartz hornfels, while the middle to upper sections are dominated by slate interbedded with thin layers of meta-sandstone and meta-conglomerate. The Huari Formation comprises continental volcanic rocks, featuring andesitic and dacitic breccias in its lower part, and dacitic breccia lava, dacite, and andesite in the upper part, semicircularly surrounding the quartz diorite porphyry to the east and south. Intrusive rocks are primarily composed of quartz diorite and quartz diorite porphyry. Quartz diorite is exposed in the western, central, and southern parts of the mining area, whereas quartz diorite porphyry occurs as a small stock covering approximately 3.83 km2. Gold orebodies in the Ludousou deposit can be classified into three types: disseminated pyritic tourmaline quartz diorite porphyry type, quartz-tourmaline-sulfide vein type, and quartz-stibnite type Au-Sb orebodies. The mineralized zone extends 2.5 km in length and 0.6 km in width, with 30 Au orebodies delineated, including four main orebodies. Two orebodies are controlled by NW-trending structures and occur as veins), with average thicknesses of 1.37 m and 1.48 m, and average grades of 4.90 g/t and 4.77 g/t, respectively. One orebody is controlled by NE-trending structures with an average thickness of 1.06 m and an average grade of 3.14 g/t. The orebody is a tourmaline-type orebody occurring as a pod, with an average thickness of 30.6 m and an average grade of 2.90 g/t.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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

ⓘ Gold

Mineral List

20 valid minerals.

Rock Types Recorded

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Andesite

ⓘ Breccia

ⓘ Conglomerate

ⓘ 'Contact quartzite'

Detailed Mineral List:

ⓘ 'Amphibole Supergroup'

Formula: AB₂C₅(T₈O₂₂)W₂

References:

Su, Hui; Yang, Fan; Tu, Jiarun; Bagas, Leon; Xu, Feifan; Ren, Weidong; Yang, Likun (2026) Tourmaline geochemistry insights into Au–Sb separation and precipitation at the Ludousou deposit, West Qinling, China. Ore Geology Reviews, 193. p.107306. doi:10.1016/j.oregeorev.2026.107306

ⓘ Andalusite

Formula: Al₂(SiO₄)O

References:

Li, Kangning; Gao, Shen; Tang, Qingyan; Zhao, Jichang; Hu, Hao; Liu, Jiajun; Zhai, Degao (2026) Source of giant Au-Sb mineralization in the Xiahe-Hezuo district, western Qinling: Constraints from Pb-S-Sb-Hg isotopes. Ore Geology Reviews, 198. p.107563. doi:10.1016/j.oregeorev.2026.107563

ⓘ 'Apatite'

Formula: Ca₅(PO₄)₃A

References:

ⓘ Arsenopyrite

Formula: FeAsS

References:

Fan, Chang, Yu, Hao-Cheng, Tamer, Murat Taner, Zhang, Lian, Wang, Jie, Liu, Pei-Xiong, Xue, Xian-Fa, Li, Chao, Wang, Yu-Xi (2025) Ore genesis of the Nanban gold deposit, West Qinling Orogen: Insights from monazite geochronology and geochemistry of sulfides. Ore Geology Reviews, 179. 106531 doi:10.1016/j.oregeorev.2025.106531

ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

References:

ⓘ Calcite

Formula: CaCO₃

References:

ⓘ 'Calcium Amphibole Subgroup'

Formula: A_nCa₂(C²⁺_5-mC³⁺_m)(Si_8-(n+m)Al_(n+m))W₂

References:

ⓘ 'Calcium Amphibole Subgroup var. Hornblende'

Formula: A_nCa₂(Z²⁺_5-mZ³⁺_m)(Si_8-(n+m)Al_(n+m))(OH,F,Cl)₂

References:

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

ⓘ 'Chlorite Group'

References:

ⓘ Covellite

Formula: CuS

References:

ⓘ Dravite

Formula: NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

References:

ⓘ Enargite

Formula: Cu₃AsS₄

References:

ⓘ Foitite

Formula: ◻(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

References:

ⓘ Galena

Formula: PbS

References:

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

ⓘ 'K Feldspar'

References:

ⓘ Magnesio-foitite

Formula: ◻(Mg₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

References:

ⓘ 'Monazite Group'

Formula: REE(PO₄)

References:

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

ⓘ Muscovite var. Sericite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

ⓘ Native Gold

Formula: Au

References:

ⓘ Orthoclase

Formula: K(AlSi₃O₈)

References:

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

ⓘ Pyrite

Formula: FeS₂

References:

ⓘ Quartz

Formula: SiO₂

References:

ⓘ Schorl

Formula: NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

References:

ⓘ Sphalerite

Formula: ZnS

References:

ⓘ Stibnite

Formula: Sb₂S₃

References:

ⓘ 'Tetrahedrite Subgroup'

Formula: Cu₆(Cu₄C²⁺₂)Sb₄S₁₂S

References:

ⓘ 'Tourmaline'

Formula: AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z

References:

ⓘ Zircon

Formula: Zr(SiO₄)

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Gold	1.AA.05	Au
Group 2 - Sulphides and Sulfosalts
ⓘ	Covellite	2.CA.05a	CuS
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Galena	2.CD.10	PbS
ⓘ	Stibnite	2.DB.05	Sb₂S₃
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Arsenopyrite	2.EB.20	FeAsS
ⓘ	'Tetrahedrite Subgroup'	2.GB.05	Cu₆(Cu₄C²⁺₂)Sb₄S₁₂S
ⓘ	Enargite	2.KA.05	Cu₃AsS₄
Group 4 - Oxides and Hydroxides
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 9 - Silicates
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Andalusite	9.AF.10	Al₂(SiO₄)O
ⓘ	Dravite	9.CK.05	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Foitite	9.CK.05	◻(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Schorl	9.CK.05	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Magnesio-foitite	9.CK.05	◻(Mg₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	var. Sericite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Orthoclase	9.FA.30	K(AlSi₃O₈)
Unclassified
ⓘ	'Amphibole Supergroup'	-	AB₂C₅(T₈O₂₂)W₂
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Chlorite Group'	-
ⓘ	'Calcium Amphibole Subgroup var. Hornblende'	-	A_nCa₂(Z²⁺_5-mZ³⁺_m)(Si_8-(n+m)Al_(n+m))(OH,F,Cl)₂
ⓘ	'Monazite Group'	-	REE(PO₄)
ⓘ	'Tourmaline'	-	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'K Feldspar'	-
ⓘ	'Apatite'	-	Ca₅(PO₄)₃A
ⓘ	'Calcium Amphibole Subgroup'	-	A_nCa₂(C²⁺_5-mC³⁺_m)(Si_8-(n+m)Al_(n+m))W₂

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Foitite	◻(Fe₂²⁺Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Calcium Amphibole Subgroup var. Hornblende	A_nCa₂(Z²⁺_5-mZ_m³⁺)(Si_8-(n+m)Al_(n+m))(OH,F,Cl)₂
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Magnesio-foitite	◻(Mg₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
B	Boron
B	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
B	ⓘ Foitite	◻(Fe₂²⁺Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
B	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
B	ⓘ Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
B	ⓘ Magnesio-foitite	◻(Mg₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Amphibole Supergroup	AB₂C₅(T₈O₂₂)W₂
O	ⓘ Andalusite	Al₂(SiO₄)O
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Calcite	CaCO₃
O	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Foitite	◻(Fe₂²⁺Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Calcium Amphibole Subgroup var. Hornblende	A_nCa₂(Z²⁺_5-mZ_m³⁺)(Si_8-(n+m)Al_(n+m))(OH,F,Cl)₂
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Monazite Group	REE(PO₄)
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Orthoclase	K(AlSi₃O₈)
O	ⓘ Quartz	SiO₂
O	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
O	ⓘ Zircon	Zr(SiO₄)
O	ⓘ Magnesio-foitite	◻(Mg₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Apatite	Ca₅(PO₄)₃A
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
F	ⓘ Calcium Amphibole Subgroup var. Hornblende	A_nCa₂(Z²⁺_5-mZ_m³⁺)(Si_8-(n+m)Al_(n+m))(OH,F,Cl)₂
Na	Sodium
Na	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Na	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Mg	ⓘ Magnesio-foitite	◻(Mg₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	Aluminium
Al	ⓘ Andalusite	Al₂(SiO₄)O
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Foitite	◻(Fe₂²⁺Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Calcium Amphibole Subgroup var. Hornblende	A_nCa₂(Z²⁺_5-mZ_m³⁺)(Si_8-(n+m)Al_(n+m))(OH,F,Cl)₂
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Orthoclase	K(AlSi₃O₈)
Al	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Magnesio-foitite	◻(Mg₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Al	ⓘ Calcium Amphibole Subgroup	A_nCa₂(C²⁺_5-mC_m³⁺)(Si_8-(n+m)Al_(n+m))W₂
Si	Silicon
Si	ⓘ Andalusite	Al₂(SiO₄)O
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Foitite	◻(Fe₂²⁺Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Calcium Amphibole Subgroup var. Hornblende	A_nCa₂(Z²⁺_5-mZ_m³⁺)(Si_8-(n+m)Al_(n+m))(OH,F,Cl)₂
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Orthoclase	K(AlSi₃O₈)
Si	ⓘ Quartz	SiO₂
Si	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Zircon	Zr(SiO₄)
Si	ⓘ Magnesio-foitite	◻(Mg₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Calcium Amphibole Subgroup	A_nCa₂(C²⁺_5-mC_m³⁺)(Si_8-(n+m)Al_(n+m))W₂
P	Phosphorus
P	ⓘ Monazite Group	REE(PO₄)
P	ⓘ Apatite	Ca₅(PO₄)₃A
S	Sulfur
S	ⓘ Arsenopyrite	FeAsS
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Covellite	CuS
S	ⓘ Enargite	Cu₃AsS₄
S	ⓘ Galena	PbS
S	ⓘ Pyrite	FeS₂
S	ⓘ Sphalerite	ZnS
S	ⓘ Stibnite	Sb₂S₃
S	ⓘ Tetrahedrite Subgroup	Cu₆(Cu₄C₂²⁺)Sb₄S₁₂S
Cl	Chlorine
Cl	ⓘ Calcium Amphibole Subgroup var. Hornblende	A_nCa₂(Z²⁺_5-mZ_m³⁺)(Si_8-(n+m)Al_(n+m))(OH,F,Cl)₂
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Orthoclase	K(AlSi₃O₈)
K	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Calcium Amphibole Subgroup var. Hornblende	A_nCa₂(Z²⁺_5-mZ_m³⁺)(Si_8-(n+m)Al_(n+m))(OH,F,Cl)₂
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ca	ⓘ Apatite	Ca₅(PO₄)₃A
Ca	ⓘ Calcium Amphibole Subgroup	A_nCa₂(C²⁺_5-mC_m³⁺)(Si_8-(n+m)Al_(n+m))W₂
Ti	Titanium
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	Iron
Fe	ⓘ Arsenopyrite	FeAsS
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Foitite	◻(Fe₂²⁺Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Covellite	CuS
Cu	ⓘ Enargite	Cu₃AsS₄
Cu	ⓘ Tetrahedrite Subgroup	Cu₆(Cu₄C₂²⁺)Sb₄S₁₂S
Zn	Zinc
Zn	ⓘ Sphalerite	ZnS
As	Arsenic
As	ⓘ Arsenopyrite	FeAsS
As	ⓘ Enargite	Cu₃AsS₄
Zr	Zirconium
Zr	ⓘ Zircon	Zr(SiO₄)
Sb	Antimony
Sb	ⓘ Stibnite	Sb₂S₃
Sb	ⓘ Tetrahedrite Subgroup	Cu₆(Cu₄C₂²⁺)Sb₄S₁₂S
Au	Gold
Au	ⓘ Native Gold	Au
Pb	Lead
Pb	ⓘ Galena	PbS

Other Regions, Features and Areas containing this locality

AsiaContinent

Hindukush Himalayan RegionGroup of Mountain Ranges
Tibetan PlateauPlateau

China

Qinling Metallogenic BeltMineral Belt

Eurasian PlateTectonic Plate

Kunlun/South Qilian Fold BeltVolcanic Arc

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References

[2]Li, Kangning; Gao, Shen; Tang, Qingyan; Zhao, Jichang; Hu, Hao; Liu, Jiajun; Zhai, Degao (2026) Source of giant Au-Sb mineralization in the Xiahe-Hezuo district, western Qinling: Constraints from Pb-S-Sb-Hg isotopes. Ore Geology Reviews, 198. p.107563. doi:10.1016/j.oregeorev.2026.107563

[1]Su, Hui; Yang, Fan; Tu, Jiarun; Bagas, Leon; Xu, Feifan; Ren, Weidong; Yang, Likun (2026) Tourmaline geochemistry insights into Au–Sb separation and precipitation at the Ludousou deposit, West Qinling, China. Ore Geology Reviews, 193. p.107306. doi:10.1016/j.oregeorev.2026.107306

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Ludousou Au Deposit, Hezuo Co., Gannan, Gansu, ChinaiRegional Level TypesLudousou Au DepositDeposit Hezuo Co.County GannanPrefecture GansuProvince ChinaCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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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

Ludousou Au Deposit, Hezuo Co., Gannan, Gansu, China i
Regional Level Types
Ludousou Au Deposit Deposit
Hezuo Co. County
Gannan Prefecture
Gansu Province
China Country