Mineral Evolution Database

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

Mineral locality data provided by mindat.org

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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:
Xilin Gol League (Xilinguole Prefecture), Inner Mongolia, China

Oldest recorded age at locality: 288
Youngest recorded age at locality: 66

mindat Locality ID: 143911
mindat URL: http://www.mindat.org/loc-143911.html

Tectonic Settings:

Total number of sublocalities beneath "Xilin Gol League (Xilinguole Prefecture), Inner Mongolia, China": 89
Total number of bottom-level sublocalities: 71

Number of Child Localities: 11
Child Localities:
Abag Banner (Abaga Co.)
Bordered Yellow Banner (Xianghuang Co.)
Duolun Co.
East Ujimqin Banner (Dongwuzhumuqin Co.; Dongwu Qi)
Erenhot Co. (Erlianhaote Co.)
Plain Blue Banner (Zhenglan Co.)
Sonid Left Banner (Sunite Zuoqi)
Sonid Right Banner (Sunite Youqi)
Taibus Banner (Taipusi Co.)
West Ujimqin Banner (Xiwuzhumuqin Co.)
Xilinhot Co. (Xilinhaote Co.)

Latitude: 43°42'25"N
Longitude: 114°59'37"E
Decimal Degree (lat, lon): 43.706944444444,114.99361111111

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.

Acanthite	Alunite	Amphibole	Andalusite	Aragonite	Arsenic	Arsenopyrite	Baryte	Berthierite	Beryl
Braunite	Calcite	Cancrinite-sodalite	Cerite	Chalcopyrite	Chalcostibite	Chlorite	Clay	Clinozoisite	Copper
Corundum	Covellite	Diaspore	Digenite	Epidote	Feldspar	Fluorite	Garnet	Gypsum	Iron
Kaolinite	Kobellite	Lawsonite	Lillianite	Malachite	Marcasite	Mica	Molybdenite	Mordenite	Nickeline
None	Not in a structural group	Orpiment	Oxalate	Pentlandite	Pumpellyite	Pyrite	Pyrophyllite	Pyroxene	Quartz
Rhabdophane	Rhodonite	Rocksalt	Rutile	Scheelite	Smectite-vermiculite	Sodalite	Sphalerite	Spinel	Stannite
Stibnite	Stilpnomelane	Talc	Tetrahedrite	Topaz	Tridymite	Vesuvianite	Wollastonite	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 As Au Ba Be Bi C Ca Cl Cr Cu F Fe H K Mg Mn Mo Na Ni O P Pb S Sb Si Sn Ti U W Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Acanthite Alunite Amphibole Andalusite Aragonite Arsenic Arsenopyrite Baryte Berthierite Beryl
Braunite Calcite Cancrinite-sodalite Cerite Chalcopyrite Chalcostibite Chlorite Clay Clinozoisite Copper
Corundum Covellite Diaspore Digenite Epidote Feldspar Fluorite Garnet Gypsum Iron
Kaolinite Kobellite Lawsonite Lillianite Malachite Marcasite Mica Molybdenite Mordenite Nickeline
None Not in a structural group Orpiment Oxalate Pentlandite Pumpellyite Pyrite Pyrophyllite Pyroxene Quartz
Rhabdophane Rhodonite Rocksalt Rutile Scheelite Smectite-vermiculite Sodalite Sphalerite Spinel Stannite
Stibnite Stilpnomelane Talc Tetrahedrite Topaz Tridymite Vesuvianite Wollastonite Zircon

122 IMA Minerals at location:

Acanthite ()*	Actinolite ()*	Albite ()*	Almandine ()*	Alunite ()*
Anatase ()*	Andalusite ()*	Andradite ()*	Anglesite ()*	Ankerite ()*
Anorthite ()*	Anthophyllite ()*	Arsenopyrite ()*	Augite ()*	Azurite ()*
Baryte ()*	Berthierite ()*	Bismuth ()*	Bismuthinite ()*	Bornite ()*
Braunite ()*	Calcite ()*	Cassiterite ()*	Cerussite ()*	Chalcocite ()*
Chalcopyrite ()*	Chalcostibite ()*	Chromite ()*	Clinochlore ()*	Clinozoisite ()*
Coffinite ()*	Copper ()*	Cordierite ()*	Covellite ()*	Cuprite ()*
Deerite ()*	Digenite ()*	Diopside ()*	Dolomite ()*	Epidote ()*
Erlianite ()*	Ferro-anthophyllite ()*	Fluorite ()*	Galena ()*	Galenobismutite ()*
Gedrite ()*	Gibbsite ()*	Glaucophane ()*	Goethite ()*	Gold ()*
Grossular ()*	Grunerite ()*	Gypsum ()*	Halite ()*	Helvine ()*
Hematite ()*	Ilmenite ()*	Iron ()*	Jadeite ()*	Jarosite ()*
Kaolinite ()*	Lawsonite ()*	Maghemite ()*	Magnesiochromite ()*	Magnetite ()*
Malachite ()*	Manganite ()*	Marcasite ()*	Merrillite ()*	Microcline ()*
Minnesotaite ()*	Mirabilite ()*	Molybdenite ()*	Montmorillonite ()*	Mordenite ()*
Muscovite ()*	Natrojarosite ()*	Nepheline ()*	Orpiment ()*	Orthoclase ()*
Pargasite ()*	Pentlandite ()*	Phlogopite ()*	Powellite ()*	Pumpellyite-(Mg) ()*
Pyrargyrite ()*	Pyrite ()*	Pyrolusite ()*	Pyrophyllite ()*	Pyrrhotite ()*
Quartz ()*	Realgar ()*	Rhodonite ()*	Rutile ()*	Scheelite ()*
Siderite ()*	Silver ()*	Sphalerite ()*	Spinel ()*	Stanfieldite ()*
Stannite ()*	Stibnite ()*	Stilpnomelane ()*	Taenite ()*	Talc ()*
Tennantite-(Fe) ()*	Tenorite ()*	Tetrahedrite-(Zn) ()*	Thénardite ()*	Topaz ()*
Tremolite ()*	Tridymite ()*	Tristramite ()*	Troilite ()*	Trona ()*
Uraninite ()*	Vesuvianite ()*	Weddellite ()*	Wollastonite ()*	Xilingolite ()*
Zircon ()*	Zoisite ()*

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
Acanthite ()*	Acanthite	Ag₂S			6	41070,41071,41072,41084,41124,41141	2793
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	201	66	4	41087,41113,41121,41130	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	201	66	16	41085,41087,41090,41091,41098,41101,41113,41114,41117,41119,41121,41127,41130,41142,41143,41152	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	201	66	2	41087,41117	2353
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆			1	41096	966
Anatase ()*	Not in a structural group	TiO₂	145	100	2	41117,41154	2162
Andalusite ()*	Andalusite	Al₂SiO₅			1	41132	1310
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	201	66	2	41087,41100	1534
Anglesite ()*	Baryte	Pb(SO₄)			2	41084,41085	2734
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂			1	41084	3092
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)			2	41093,41117	1036
Anthophyllite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂			1	41117	718
Arsenopyrite ()*	Arsenopyrite	FeAsS	288	66	10	41084,41087,41098,41101,41121,41124,41129,41130,41142,41149	9052
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆			1	41077	2060
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	201	66	8	41086,41087,41101,41102,41103,41121,41130,41142	5509
Baryte ()*	Baryte	Ba(SO₄)	145	100	1	41154	11547
Berthierite ()*	Berthierite	FeSb₂S₄			1	41124	343
Bismuth ()*	Arsenic	Bi	288	66	3	41087,41129,41142	1966
Bismuthinite ()*	Stibnite	Bi₂S₃	201	66	4	41087,41099,41142,41149	1935
Bornite ()*	None	Cu₅FeS₄	201	66	9	41078,41085,41087,41101,41103,41127,41130,41142,41149	5516
Braunite ()*	Braunite	Mn²⁺Mn³⁺₆O₈(SiO₄)			1	41113	483
Calcite ()*	Calcite	Ca(CO₃)	288	66	25	41070,41071,41072,41078,41084,41085,41086,41087,41092,41097,41098,41100,41102,41103,41110,41113,41121,41124,41127,41129,41130,41141,41142,41149,41154	27770
Cassiterite ()*	Rutile	SnO₂			2	41142,41149	5171
Cerussite ()*	Aragonite	Pb(CO₃)			2	41098,41141	4979
Chalcocite ()*	None	Cu₂S	201	66	8	41084,41086,41087,41102,41103,41124,41127,41130	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	288	66	29	41070,41071,41072,41077,41078,41084,41085,41086,41087,41090,41096,41099,41101,41102,41103,41113,41119,41120,41121,41124,41127,41129,41130,41131,41141,41142,41149,41152,41154	27198
Chalcostibite ()*	Chalcostibite	CuSbS₂			1	41124	162
Chromite ()*	Spinel	Fe²⁺Cr₂O₄			1	41150	3902
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈			4	41144,41146,41147,41148	1756
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)			1	41113	1025
Coffinite ()*	Zircon	U(SiO₄)·nH₂O			1	41110	566
Copper ()*	Copper	Cu			1	41130	3846
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈			2	41093,41132	1008
Covellite ()*	Covellite	CuS			6	41086,41098,41102,41120,41130,41142	4165
Cuprite ()*	Not in a structural group	Cu₂O			2	41086,41103	2970
Deerite ()*	None	Fe²⁺₆Fe³⁺₃(Si₆O₁₇)O₃(OH)₅			1	41114	27
Digenite ()*	Digenite	Cu_1.8S	201	66	2	41087,41130	1027
Diopside ()*	Pyroxene	CaMgSi₂O₆	201	66	5	41087,41089,41091,41092,41148	4135
Dolomite ()*	None	CaMg(CO₃)₂	145	100	4	41084,41110,41130,41154	9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	201	66	17	41070,41071,41072,41077,41078,41084,41087,41090,41091,41096,41098,41113,41121,41122,41127,41130,41143	8173
Erlianite ()*	None	Fe²⁺₄Fe³⁺₂Si₆O₁₅(OH)₈			1	41114	1
Ferro-anthophyllite ()*	Amphibole	Fe²⁺₂Fe²⁺₅Si₈O₂₂(OH)₂			1	41117	5
Fluorite ()*	Fluorite	CaF₂	201	66	12	41070,41084,41085,41087,41092,41098,41101,41124,41127,41141,41142,41149	9617
Galena ()*	Rocksalt	PbS	288	66	28	41069,41070,41071,41072,41082,41084,41085,41086,41087,41089,41090,41096,41097,41098,41101,41103,41113,41119,41120,41121,41124,41127,41129,41130,41131,41141,41142,41149	24243
Galenobismutite ()*	Kobellite	PbBi₂S₄	201	66	1	41087	192
Gedrite ()*	Amphibole	Mg₂(Mg₃Al₂)(Si₆Al₂)O₂₂(OH)₂			1	41117	178
Gibbsite ()*	None	Al(OH)₃	145	100	1	41154	504
Glaucophane ()*	Amphibole	Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂			3	41113,41114,41136	286
Goethite ()*	Diaspore	FeO(OH)			4	41099,41110,41121,41135	7437
Gold ()*	Copper	Au	288	66	12	41078,41087,41098,41103,41105,41119,41120,41121,41122,41129,41130,41152	30554
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃	201	66	1	41087	1544
Grunerite ()*	Amphibole	Fe²⁺₂Fe²⁺₅Si₈O₂₂(OH)₂			1	41117	223
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	145	100	4	41094,41100,41110,41154	6890
Halite ()*	Rocksalt	NaCl			1	41094	1398
Helvine ()*	Sodalite Cancrinite-sodalite	Be₃Mn²⁺₄(SiO₄)₃S	201	66	1	41087	237
Hematite ()*	Corundum	Fe₂O₃	201	66	17	41078,41087,41092,41098,41099,41100,41101,41103,41113,41114,41117,41122,41126,41130,41135,41142,41149	14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	288	288	2	41117,41129	5433
Iron ()*	Iron	Fe			2	41093,41150	1089
Jadeite ()*	Pyroxene	NaAlSi₂O₆			1	41143	154
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆			3	41084,41086,41103	2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	201	66	17	41070,41074,41075,41076,41078,41084,41085,41087,41096,41097,41098,41120,41121,41124,41130,41142,41154	5591
Lawsonite ()*	Lawsonite	CaAl₂(Si₂O₇)(OH)₂·H₂O			2	41113,41136	121
Maghemite ()*	Spinel	(Fe³⁺_0.67 _0.33)Fe³⁺₂O₄	201	66	1	41087	229
Magnesiochromite ()*	Spinel	MgCr₂O₄			4	41144,41146,41147,41148	311
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	288	66	15	41077,41078,41087,41090,41091,41092,41099,41114,41126,41127,41129,41130,41135,41143,41149	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	288	66	13	41077,41086,41087,41098,41101,41102,41103,41121,41122,41126,41129,41130,41142	12537
Manganite ()*	Rutile	Mn³⁺O(OH)	145	100	1	41154	770
Marcasite ()*	Marcasite	FeS₂	288	66	11	41070,41074,41076,41084,41087,41096,41103,41112,41120,41129,41142	5674
Merrillite ()*	Cerite	Ca₉NaMg(PO₄)₇			1	41093	230
Microcline ()*	Feldspar	K(AlSi₃O₈)			1	41101	4924
Minnesotaite ()*	Clay Talc	Fe²⁺₃Si₄O₁₀(OH)₂			1	41114	61
Mirabilite ()*	None	Na₂(SO₄)·10H₂O			1	41094	223
Molybdenite ()*	Molybdenite	MoS₂	201	66	9	41086,41087,41090,41101,41125,41127,41130,41149,41152	5800
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	145	100	4	41080,41081,41130,41154	1508
Mordenite ()*	Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆·28H₂O			2	41080,41081	405
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	288	66	31	41070,41071,41072,41074,41078,41084,41085,41086,41087,41090,41096,41097,41098,41101,41102,41110,41114,41117,41119,41120,41121,41122,41124,41127,41129,41130,41141,41142,41149,41152,41154	17380
Natrojarosite ()*	Alunite	NaFe³⁺₃(SO₄)₂(OH)₆			1	41098	254
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)			1	41143	884
Orpiment ()*	Orpiment	As₂S₃	288	288	1	41129	511
Orthoclase ()*	Feldspar	K(AlSi₃O₈)			1	41068	2349
Pargasite ()*	Amphibole	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂			1	41143	313
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	201	66	1	41087	1512
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂			1	41143	2273
Powellite ()*	Scheelite	Ca(MoO₄)			1	41090	494
Pumpellyite-(Mg) ()*	Pumpellyite	Ca₂MgAl₂(Si₂O₇)(SiO₄)(OH)₂·H₂O			1	41113	106
Pyrargyrite ()*	None	Ag₃SbS₃			2	41084,41124	1425
Pyrite ()*	Pyrite	FeS₂	288	66	41	41068,41070,41071,41072,41074,41076,41077,41078,41084,41085,41086,41087,41089,41090,41091,41096,41097,41098,41099,41101,41102,41103,41109,41110,41111,41112,41113,41119,41120,41121,41122,41124,41127,41129,41130,41131,41141,41142,41149,41152,41154	39462
Pyrolusite ()*	Rutile	MnO₂			6	41070,41071,41072,41084,41085,41113	3106
Pyrophyllite ()*	Clay Pyrophyllite	Al₂Si₄O₁₀(OH)₂	145	100	1	41154	771
Pyrrhotite ()*	Nickeline	Fe₇S₈	288	66	10	41077,41084,41087,41099,41121,41124,41127,41129,41130,41142	9056
Quartz ()*	Quartz	SiO₂	288	66	43	41068,41070,41071,41074,41075,41076,41077,41078,41080,41081,41084,41085,41086,41087,41089,41090,41092,41096,41097,41098,41100,41101,41102,41103,41110,41113,41114,41117,41119,41120,41121,41122,41124,41125,41126,41127,41129,41130,41141,41142,41149,41152,41154	61156
Realgar ()*	None	AsS	288	288	1	41129	712
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)	201	66	1	41087	969
Rutile ()*	Rutile	TiO₂			1	41117	5614
Scheelite ()*	Scheelite	Ca(WO₄)	201	66	8	41077,41078,41087,41101,41127,41142,41149,41154	4894
Siderite ()*	Calcite	Fe(CO₃)			3	41085,41114,41142	6417
Silver ()*	Copper	Ag	288	100	8	41084,41097,41098,41129,41130,41141,41142,41154	5186
Sphalerite ()*	Sphalerite	ZnS	288	66	32	41069,41070,41071,41072,41082,41084,41085,41086,41087,41089,41090,41091,41092,41096,41097,41098,41099,41101,41102,41103,41120,41121,41124,41127,41129,41130,41131,41141,41142,41149,41152,41154	21482
Spinel ()*	Spinel	MgAl₂O₄			1	41145	1934
Stanfieldite ()*	None	Ca₄Mg₅(PO₄)₆			1	41093	14
Stannite ()*	Stannite Sphalerite	Cu₂FeSnS₄			3	41084,41142,41149	668
Stibnite ()*	Stibnite	Sb₂S₃			2	41124,41130	3418
Stilpnomelane ()*	Stilpnomelane Clay	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆·nH₂O			2	41113,41114	456
Taenite ()*	None	(Ni,Fe)			1	41093	703
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	288	288	6	41084,41129,41144,41146,41147,41148	3337
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃			1	41142	1803
Tenorite ()*	None	CuO			1	41103	1101
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃			4	41124,41127,41130,41142	5317
Thénardite ()*	None	Na₂(SO₄)			1	41137	299
Topaz ()*	Topaz	Al₂SiO₄F₂			2	41101,41149	1476
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	201	66	3	41087,41089,41090	2562
Tridymite ()*	Tridymite	SiO₂			3	41080,41081,41093	458
Tristramite ()*	Rhabdophane	(Ca,U⁴⁺,Fe³⁺)(PO₄,SO₄)·2H₂O			1	41112	7
Troilite ()*	None	FeS			1	41093	1044
Trona ()*	None	Na₃(HCO₃)(CO₃)·2H₂O			1	41137	129
Uraninite ()*	Fluorite	UO₂			4	41074,41109,41110,41111	2718
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀	201	66	2	41087,41148	1395
Weddellite ()*	Oxalate	Ca(C₂O₄)·2H₂O	145	100	1	41154	32
Wollastonite ()*	Wollastonite	CaSiO₃	201	66	1	41087	1247
Xilingolite ()*	Lillianite	Pb₃Bi₂S₆	201	66	1	41087	7
Zircon ()*	Zircon	Zr(SiO₄)	145	100	1	41154	5251
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	201	66	2	41087,41130	1025

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.

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age Interpret	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
Chen2007tbl01-59	201	66	Jurassic–Cretaceous		Bornite, Chalcopyrite, Galena, Gold, Hematite, Magnetite, Molybdenite, Pyrite, Sphalerite		722	Chaobuleng Mine (Zhaobuleng Mine), East Ujimqin Banner (Dongwuzhumuqin Co.; Dongwu Qi), Xilin Gol League (Xilinguole Prefecture), Inner Mongolia, China	Chaobuleng, Dongwuqi, Inner Mongol	Chen et al. (2007)	10.1016/j.oregeorev.2005.01.001	OGR31_139
vms-00388	288	288	Lower Permian-Late Carboniferous (292-283)			S	143888	Bieluwutu Cu-polymetallic Deposit, Sonid Right Banner (Sunite Youqi), Xilin Gol League (Xilinguole Prefecture), Inner Mongolia, China	Bieluwutu	Moiser et al. (2009)		USGSOFR2009_1034
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

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