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Heimulin ultramafic complex, Ningqiang County, Hanzhong, Shaanxi, Chinai
Regional Level Types
Heimulin ultramafic complexComplex
Ningqiang CountyCounty
HanzhongPrefecture
ShaanxiProvince
ChinaCountry

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Latitude & Longitude (WGS84):
33° 9' 30'' North , 106° 15' 0'' East
Latitude & Longitude (decimal):
33.15833,106.25000
GRN:
N23E63
Type:
Complex
Köppen climate type:
Cwa : Monsoon-influenced humid subtropical climate
Mindat Locality ID:
476178
Long-form identifier:
mindat:1:2:476178:8
GUID (UUID V4):
0


The Heimulin ultramafic complex is a completely serpentinized body located within the Mian–Lue–Yang triangular region. It occurs as a lens-shaped body in the northern part of the Bikou terrane, trending NEE–SWW, with a length of approximately 8 km and a width of ~1.2 km. The surrounding strata are predominantly Precambrian metasedimentary rocks, mainly belonging to the Bikou and Hejiayan groups. In addition, nearby exposures include monzogranite, quartz diorite, altered diorite, and gabbro, with emplacement ages of ~836–855 Ma. Several serpentinized ultramafic lenses are distributed in this area, among which both the Heimulin and Jianchaling bodies host chrysotile asbestos mineralization. Notably, the Heimulin body is not only a large chrysotile asbestos deposit but also the only known super-large deposit of fibrous brucite worldwide.

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

9 valid minerals.

Rock Types Recorded


Rock list contains entries from the region specified including sub-localities

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Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Antigorite
Formula: Mg3(Si2O5)(OH)4
ⓘ Brucite
Formula: Mg(OH)2
ⓘ Chrysotile
Formula: Mg3(Si2O5)(OH)4
ⓘ Chrysotile var. Chrysotile asbestos
Formula: Mg3(Si2O5)(OH)4
ⓘ Lizardite
Formula: Mg3(Si2O5)(OH)4
ⓘ Magnesite
Formula: MgCO3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Olivine Group'
Formula: M2SiO4
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Spinel
Formula: MgAl2O4

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘSpinel4.BB.05MgAl2O4
ⓘQuartz4.DA.05SiO2
ⓘBrucite4.FE.05Mg(OH)2
Group 5 - Nitrates and Carbonates
ⓘMagnesite5.AB.05MgCO3
Group 9 - Silicates
ⓘChrysotile9.00.Mg3(Si2O5)(OH)4
ⓘvar. Chrysotile asbestos9.00.Mg3(Si2O5)(OH)4
ⓘAntigorite9.ED.15Mg3(Si2O5)(OH)4
ⓘLizardite9.ED.15Mg3(Si2O5)(OH)4
Unclassified
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4
ⓘ'Olivine Group'-M2SiO4

List of minerals for each chemical element

HHydrogen
Hⓘ AntigoriteMg3(Si2O5)(OH)4
Hⓘ BruciteMg(OH)2
Hⓘ ChrysotileMg3(Si2O5)(OH)4
Hⓘ LizarditeMg3(Si2O5)(OH)4
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
Hⓘ Chrysotile var. Chrysotile asbestosMg3(Si2O5)(OH)4
CCarbon
Cⓘ MagnesiteMgCO3
OOxygen
Oⓘ AntigoriteMg3(Si2O5)(OH)4
Oⓘ BruciteMg(OH)2
Oⓘ ChrysotileMg3(Si2O5)(OH)4
Oⓘ LizarditeMg3(Si2O5)(OH)4
Oⓘ MagnesiteMgCO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ QuartzSiO2
Oⓘ SpinelMgAl2O4
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
Oⓘ Olivine GroupM2SiO4
Oⓘ Chrysotile var. Chrysotile asbestosMg3(Si2O5)(OH)4
MgMagnesium
Mgⓘ AntigoriteMg3(Si2O5)(OH)4
Mgⓘ BruciteMg(OH)2
Mgⓘ ChrysotileMg3(Si2O5)(OH)4
Mgⓘ LizarditeMg3(Si2O5)(OH)4
Mgⓘ MagnesiteMgCO3
Mgⓘ SpinelMgAl2O4
Mgⓘ Chrysotile var. Chrysotile asbestosMg3(Si2O5)(OH)4
AlAluminium
Alⓘ SpinelMgAl2O4
SiSilicon
Siⓘ AntigoriteMg3(Si2O5)(OH)4
Siⓘ ChrysotileMg3(Si2O5)(OH)4
Siⓘ LizarditeMg3(Si2O5)(OH)4
Siⓘ QuartzSiO2
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
Siⓘ Olivine GroupM2SiO4
Siⓘ Chrysotile var. Chrysotile asbestosMg3(Si2O5)(OH)4
SSulfur
Sⓘ PyriteFeS2
FeIron
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2

Localities in this Region

China
  • Shaanxi
    • Hanzhong

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]Gong, Meijun; Deng, Peipei; Wu, Kai (2026) Carbon and Sulfur Retention in Forearc Serpentinites: Evidence from the Heimulin Serpentinites, Central China. Minerals, 16 (5). p.543. doi:10.3390/min16050543
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