Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Xilinhot Co. (Xilinhaote Co.), Xilin Gol League (Xilinguole Prefecture), Inner Mongolia, China

Oldest recorded age at locality: 145
Youngest recorded age at locality: 100

mindat Locality ID: 224610
mindat URL: http://www.mindat.org/loc-224610.html

Tectonic Settings:

Total number of sublocalities beneath "Xilinhot Co. (Xilinhaote Co.), Xilin Gol League (Xilinguole Prefecture), Inner Mongolia, China": 3
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Chaokewenduo'er Au-(Cu-Mo) Deposit
Shengli Coal Field

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Baryte	Calcite	Chalcopyrite	Clay	Copper	Feldspar	Gypsum	Kaolinite	Mica	Molybdenite
None	Not in a structural group	Oxalate	Pyrite	Pyrophyllite	Quartz	Rutile	Scheelite	Smectite-vermiculite	Sphalerite
Zircon

Albite ()*	Anatase ()*	Baryte ()*	Calcite ()*	Chalcopyrite ()*
Dolomite ()*	Gibbsite ()*	Gold ()*	Gypsum ()*	Kaolinite ()*
Manganite ()*	Molybdenite ()*	Montmorillonite ()*	Muscovite ()*	Pyrite ()*
Pyrophyllite ()*	Quartz ()*	Scheelite ()*	Silver ()*	Sphalerite ()*
Weddellite ()*	Zircon ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Ag Al Au Ba C Ca Cu Fe H K Mg Mn Mo Na O S Si Ti W Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Baryte Calcite Chalcopyrite Clay Copper Feldspar Gypsum Kaolinite Mica Molybdenite
None Not in a structural group Oxalate Pyrite Pyrophyllite Quartz Rutile Scheelite Smectite-vermiculite Sphalerite
Zircon

22 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)			1	41152	8803
Anatase ()*	Not in a structural group	TiO₂	145	100	1	41154	2162
Baryte ()*	Baryte	Ba(SO₄)	145	100	1	41154	11547
Calcite ()*	Calcite	Ca(CO₃)	145	100	1	41154	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	145	100	2	41152,41154	27198
Dolomite ()*	None	CaMg(CO₃)₂	145	100	1	41154	9895
Gibbsite ()*	None	Al(OH)₃	145	100	1	41154	504
Gold ()*	Copper	Au			1	41152	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	145	100	1	41154	6890
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	145	100	1	41154	5591
Manganite ()*	Rutile	Mn³⁺O(OH)	145	100	1	41154	770
Molybdenite ()*	Molybdenite	MoS₂			1	41152	5800
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	145	100	1	41154	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	145	100	2	41152,41154	17380
Pyrite ()*	Pyrite	FeS₂	145	100	2	41152,41154	39462
Pyrophyllite ()*	Clay Pyrophyllite	Al₂Si₄O₁₀(OH)₂	145	100	1	41154	771
Quartz ()*	Quartz	SiO₂	145	100	2	41152,41154	61156
Scheelite ()*	Scheelite	Ca(WO₄)	145	100	1	41154	4894
Silver ()*	Copper	Ag	145	100	1	41154	5186
Sphalerite ()*	Sphalerite	ZnS	145	100	2	41152,41154	21482
Weddellite ()*	Oxalate	Ca(C₂O₄)·2H₂O	145	100	1	41154	32
Zircon ()*	Zircon	Zr(SiO₄)	145	100	1	41154	5251

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_000848	The calcium in weddellite replaces the hydrogen in the oxalic acid by reacting with calcium hydroxide or calcite. This reaction produces molecules of mono-hydrated calcium oxalate (whewellite) and water. The source of the oxalic acid is undoubtedly organic and can come from coal or organic debris in sedimentary rocks. ... This coal seam is highly enriched in Ge, As, W, and Hg (one to two orders of magnitude higher than the usual worldwide coal concentrations), with high contents of Sb, U, Cs, and Be (one order of magnitude higher than the usual worldwide coal concentrations). The geochemical and mineralogical profile patterns of the coal seam were attributed to the development of a basal reduced marsh environment evolving towards a more oxidizing marsh environment in the upper part of the coal seam. This could be related to the evolution from a high water table low moor marsh environment to a high moor marsh into an open water body with a higher detrital influence at the top of the seam.

Age ID

Locality Notes

Michelle_000848

The calcium in weddellite replaces the hydrogen in the oxalic acid by reacting with calcium hydroxide or calcite. This reaction produces molecules of mono-hydrated calcium oxalate (whewellite) and water. The source of the oxalic acid is undoubtedly organic and can come from coal or organic debris in sedimentary rocks. ... This coal seam is highly enriched in Ge, As, W, and Hg (one to two orders of magnitude higher than the usual worldwide coal concentrations), with high contents of Sb, U, Cs, and Be (one order of magnitude higher than the usual worldwide coal concentrations). The geochemical and mineralogical profile patterns of the coal seam were attributed to the development of a basal reduced marsh environment evolving towards a more oxidizing marsh environment in the upper part of the coal seam. This could be related to the evolution from a high water table low moor marsh environment to a high moor marsh into an open water body with a higher detrital influence at the top of the seam.

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Michelle_000848	145	100	Early Cretaceous		Age of coal deposit							Weddellite		224612	Wulantuga Ge Deposit, Shengli Coal Field, Xilinhot Co. (Xilinhaote Co.), Xilin Gol League (Xilinguole Prefecture), Inner Mongolia, China	Wulantuga Ge deposit	Zhuang et al. (2006)	10.1016/j.coal.2005.06.005	IJCG66_119	The weakening of the upper layer of the Earth's crust by magmatic episodes and consequent thermal processes provided a suitable framework for the formation and maturation of coal deposits in faulted basins during the Late Jurassic and the Early Cretaceous. Many of these were formed on volcanic basements, and thus the distribution of coal basins is closely connected with volcanic zones. The Shengli coal field was developed after a period of high volcanic activity.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...