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Miaoan Au-polymetallic deposit, Laiyuan County, Baoding, Hebei, Chinai
Regional Level Types
Miaoan Au-polymetallic depositDeposit
Laiyuan CountyCounty
BaodingPrefecture
HebeiProvince
ChinaCountry

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Latitude & Longitude (WGS84):
39° 8' 59'' North , 114° 49' 59'' East
Latitude & Longitude (decimal):
39.15000,114.83333
GRN:
N27E64
Type:
Deposit
Köppen climate type:
Dwb : Monsoon-influenced warm-summer humid continental climate
Mindat Locality ID:
424712
Long-form identifier:
mindat:1:2:424712:1
GUID (UUID V4):
0


The Miaoan Au-polymetallic deposit is composed of several orebodies with different ore types. Based on the type and combination of ores, the deposit can be divided into three ore belts: (I) the Cu–Fe ore belt, (II) the Cu–Zn ore belt, and (III) the Au ore belt.

The Cu–Fe ore belt is developed in the skarn contact zone between intermediate-acid magmatic rocks (granite, quartz monzonite, and diorite) and dolomite of the Gaoyuzhuang Formation in the northwestern part of the mining area. The length of the belt controlled by the project is ~1500 m, and the width is 100–300 m. A total of 12 orebodies have been found in this belt, with 70°–90° dips and 60°–75° dip angles. The I-1 orebody is the largest orebody.

The Cu–Zn ore belt is located in the marble dolomite and hornfels shale of the Gaoyuzhuang Formation in the northern part of the mining area. Skarnization is developed in this belt. The ore belt is ~2000 m in length and 50–300 m in width and has an ore belt strike of 20°–30°. Seven Cu–Zn orebodies are developed in the belt, all of which are controlled by NE-trending faults. Among these, the Ⅱ-2, Ⅱ-4, and Ⅱ-6 orebodies are large.
The Ⅱ-2 orebody is located in the northern section of the Cu–Zn ore belt, with a length of 420 m and a thickness of 1.00–1.46 m. It has veined shapes and occurs in the fractured alteration zone among dolomite layers.

The Au ore belt is located in the central and eastern parts of the Miaoan mining area, outside of the Cu–Fe and Cu–Zn ore belts. It is controlled by the NW-trending fracture zone and is divided into three ore blocks: Xiaolinggen, Pinggou, and Niulan.
The Xiaolinggen ore block is located in the eastern part of the mining area. The mineralized zone is strictly controlled by the NW-trending fault, with a strike of ~310°, a dip of 40°–50°, a dip angle of 40°–65°, and a thickness of 1.00–8.00 m with an average of 3.00 m. It is composed of phlogopitized diabase and pyritized marble. The length of the altered mineralization zone exceeds 2600 m, but Au mineralization is discontinuous. Three industrial orebodies have primarily formed at the intersection of the NW- and NE trending faults.

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.


Mineral List


13 valid minerals.

Rock Types Recorded

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Calcite
Formula: CaCO3
ⓘ Chalcocite
Formula: Cu2S
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Galena
Formula: PbS
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ 'Limonite'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Gold
Formula: Au
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Sphalerite
Formula: ZnS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘDolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Limonite'-

List of minerals for each chemical element

HHydrogen
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
OOxygen
Oⓘ CalciteCaCO3
Oⓘ DolomiteCaMg(CO3)2
Oⓘ IlmeniteFe2+TiO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
MgMagnesium
Mgⓘ DolomiteCaMg(CO3)2
AlAluminium
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ ChalcociteCu2S
Sⓘ GalenaPbS
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
Sⓘ SphaleriteZnS
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ IlmeniteFe2+TiO3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChalcociteCu2S
ZnZinc
Znⓘ SphaleriteZnS
AuGold
Auⓘ Native GoldAu
PbLead
Pbⓘ GalenaPbS

Other Regions, Features and Areas containing this locality

AsiaContinent
China
Eurasian PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

[1]Li, Jie, Nan Li, Meiyun Wang, Yingxin Song, Zongyuan Tang, Pu Zhang, Guang Wang, and Lipeng Zhang. (2022) "Formation of the Miaoan Au-Polymetallic Deposit in the Northern Taihang Mountain, North China Craton: Ore Geology, Geochronological and Geochemical Perspectives" Minerals 12, no. 9: 1144. https://doi.org/10.3390/min12091144
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