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:
Ashio-machi, Nikko City, Tochigi, Japan

Oldest recorded age at locality: 15.9
Youngest recorded age at locality: 13.7

mindat Locality ID: 30268
mindat URL: http://www.mindat.org/loc-30268.html

Tectonic Settings:

Total number of sublocalities beneath "Ashio-machi, Nikko City, Tochigi, Japan": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Ashio Mine (Ashio Copper Mine)
Honzan Mine
Kotaki Mine
Kyurasawa Mine (Kyuurasawa; Kyurazawa)
Namarisawa
Sunoko-Bashi Mine
Tsudo Mine

Latitude: 36°37'59"N
Longitude: 139°26'40"E
Decimal Degree (lat, lon): 36.633055555556,139.44444444444

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.

Ajoite	Amphibole	Apatite	Argyrodite	Arsenic	Arsenopyrite	Calcite	Chalcanthite	Chalcopyrite	Chlorite
Clay	Columbite	Copper	Covellite	Fluorite	Garnet	Gypsum	Koritnigite	Malachite	Marcasite
Matlockite	Mica	Nickeline	None	Not in a structural group	Olivine	Pyrite	Pyrosmalite	Quartz	Rhodonite
Rocksalt	Rutile	Scheelite	Sphalerite	Stannite	Stannoidite	Stibnite	Tetradymite	Tetrahedrite	Vivianite
Wavellite

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 Bi C Ca Cl Co Cu F Fe H K Mg Mn Mo O P Pb S Sb Se Si Sn Te W Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Ajoite Amphibole Apatite Argyrodite Arsenic Arsenopyrite Calcite Chalcanthite Chalcopyrite Chlorite
Clay Columbite Copper Covellite Fluorite Garnet Gypsum Koritnigite Malachite Marcasite
Matlockite Mica Nickeline None Not in a structural group Olivine Pyrite Pyrosmalite Quartz Rhodonite
Rocksalt Rutile Scheelite Sphalerite Stannite Stannoidite Stibnite Tetradymite Tetrahedrite Vivianite
Wavellite

62 IMA Minerals at location:

Ajoite ()*	Alabandite ()*	Arsenopyrite ()*	Azurite ()*	Bismoclite ()*
Bismuth ()*	Bismuthinite ()*	Bolivarite ()*	Bornite ()*	Calcite ()*
Canfieldite ()*	Cannonite ()*	Cassiterite ()*	Chalcanthite ()*	Chalcocite ()*
Chalcopyrite ()*	Chamosite ()*	Cobaltkoritnigite ()*	Copper ()*	Covellite ()*
Cuprite ()*	Djurleite ()*	Ferberite ()*	Fluorapatite ()*	Fluorite ()*
Galena ()*	Gold ()*	Gypsum ()*	Ikunolite ()*	Koechlinite ()*
Laitakarite ()*	Laumontite ()*	Ludlamite ()*	Malachite ()*	Manganite ()*
Manganosite ()*	Marcasite ()*	Mawsonite ()*	Muscovite ()*	Pyrite ()*
Pyrosmalite-(Mn) ()*	Pyrrhotite ()*	Quartz ()*	Rhodochrosite ()*	Rhodonite ()*
Rucklidgeite ()*	Scheelite ()*	Siderite ()*	Silver ()*	Spessartine ()*
Sphalerite ()*	Stannite ()*	Stannoidite ()*	Stibnite ()*	Tennantite-(Fe) ()*
Tephroite ()*	Tetrahedrite-(Zn) ()*	Tremolite ()*	Vivianite ()*	Wavellite ()*
Wittichenite ()*	Zavaritskite ()*

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
Ajoite ()*	Ajoite	K₃Cu²⁺₂₀Al₃Si₂₉O₇₆(OH)₁₆·8H₂O	15.9	13.7	1	76560	11
Alabandite ()*	Rocksalt	MnS	15.9	13.7	1	76563	312
Arsenopyrite ()*	Arsenopyrite	FeAsS	15.9	13.7	2	76560,76563	9052
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	15.9	13.7	1	76560	5509
Bismoclite ()*	Matlockite	BiOCl	15.9	13.7	1	76560	71
Bismuth ()*	Arsenic	Bi	15.9	13.7	1	76560	1966
Bismuthinite ()*	Stibnite	Bi₂S₃	15.9	13.7	1	76560	1935
Bolivarite ()*	None	Al₂(PO₄)(OH)₃·4H₂O	15.9	13.7	1	76560	4
Bornite ()*	None	Cu₅FeS₄	15.9	13.7	1	76560	5516
Calcite ()*	Calcite	Ca(CO₃)	15.9	13.7	3	76560,76562,76563	27770
Canfieldite ()*	Argyrodite	Ag₈SnS₆	15.9	13.7	1	76560	91
Cannonite ()*	None	Bi₂O(SO₄)(OH)₂	15.9	13.7	1	76560	26
Cassiterite ()*	Rutile	SnO₂	15.9	13.7	1	76560	5171
Chalcanthite ()*	Chalcanthite	Cu(SO₄)·5H₂O	15.9	13.7	1	76560	925
Chalcocite ()*	None	Cu₂S	15.9	13.7	1	76560	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	15.9	13.7	6	76560,76561,76562,76563,76565,76566	27198
Chamosite ()*	Chlorite Clay	(Fe²⁺,Mg,Al,Fe³⁺)₆(Si,Al)₄O₁₀(OH,O)₈	15.9	13.7	1	76560	577
Cobaltkoritnigite ()*	Koritnigite	Co(AsO₃OH)·H₂O	15.9	13.7	1	76560	32
Copper ()*	Copper	Cu	15.9	13.7	1	76560	3846
Covellite ()*	Covellite	CuS	15.9	13.7	1	76560	4165
Cuprite ()*	Not in a structural group	Cu₂O	15.9	13.7	1	76560	2970
Djurleite ()*	None	Cu₃₁S₁₆	15.9	13.7	1	76560	300
Ferberite ()*	Columbite	Fe²⁺(WO₄)	15.9	13.7	1	76560	551
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	15.9	13.7	2	76560,76562	2740
Fluorite ()*	Fluorite	CaF₂	15.9	13.7	1	76560	9617
Galena ()*	Rocksalt	PbS	15.9	13.7	3	76560,76562,76563	24243
Gold ()*	Copper	Au	15.9	13.7	1	76560	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	15.9	13.7	1	76562	6890
Ikunolite ()*	Tetradymite	Bi₄S₃	15.9	13.7	1	76560	54
Koechlinite ()*	None	Bi₂MoO₆	15.9	13.7	1	76560	39
Laitakarite ()*	Tetradymite	Bi₄(Se,S)₃	15.9	13.7	1	76560	30
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	15.9	13.7	2	76560,76561	1271
Ludlamite ()*	None	Fe²⁺₃(PO₄)₂·4H₂O	15.9	13.7	1	76560	66
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	15.9	13.7	1	76560	12537
Manganite ()*	Rutile	Mn³⁺O(OH)	15.9	13.7	1	76563	770
Manganosite ()*	Rocksalt	MnO	15.9	13.7	1	76563	73
Marcasite ()*	Marcasite	FeS₂	15.9	13.7	1	76560	5674
Mawsonite ()*	None	Cu₆Fe₂SnS₈	15.9	13.7	1	76560	92
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	15.9	13.7	1	76560	17380
Pyrite ()*	Pyrite	FeS₂	15.9	13.7	2	76560,76562	39462
Pyrosmalite-(Mn) ()*	Pyrosmalite Clay	Mn²⁺₈Si₆O₁₅(OH,Cl)₁₀	15.9	13.7	1	76563	25
Pyrrhotite ()*	Nickeline	Fe₇S₈	15.9	13.7	2	76560,76563	9056
Quartz ()*	Quartz	SiO₂	15.9	13.7	3	76560,76563,76564	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	15.9	13.7	1	76563	1711
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)	15.9	13.7	1	76563	969
Rucklidgeite ()*	Tetradymite	PbBi₂Te₄	15.9	13.7	1	76560	64
Scheelite ()*	Scheelite	Ca(WO₄)	15.9	13.7	1	76560	4894
Siderite ()*	Calcite	Fe(CO₃)	15.9	13.7	1	76560	6417
Silver ()*	Copper	Ag	15.9	13.7	1	76560	5186
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃	15.9	13.7	1	76563	1214
Sphalerite ()*	Sphalerite	ZnS	15.9	13.7	2	76560,76563	21482
Stannite ()*	Stannite Sphalerite	Cu₂FeSnS₄	15.9	13.7	1	76560	668
Stannoidite ()*	Stannoidite	Cu₈(Fe,Zn)₃Sn₂S₁₂	15.9	13.7	1	76560	80
Stibnite ()*	Stibnite	Sb₂S₃	15.9	13.7	1	76560	3418
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃	15.9	13.7	1	76560	1803
Tephroite ()*	Olivine	Mn²⁺₂(SiO₄)	15.9	13.7	1	76563	240
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	15.9	13.7	1	76560	5317
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	15.9	13.7	1	76563	2562
Vivianite ()*	Vivianite	Fe²⁺₃(PO₄)₂·8H₂O	15.9	13.7	1	76560	636
Wavellite ()*	Wavellite	Al₃(PO₄)₂(OH)₃·5H₂O	15.9	13.7	1	76560	374
Wittichenite ()*	None	Cu₃BiS₃	15.9	13.7	1	76560	297
Zavaritskite ()*	Matlockite	BiOF	15.9	13.7	1	76560	26

2 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
	Kristen001943	15.9	13.7	14.8±1.1	K-Ar			whole rock							6800	Ashio Mine (Ashio Copper Mine), Ashio-machi, Nikko City, Tochigi, Japan	Ashio	Shibata and Ishihara (1974)	10.2113/gsecongeo.69.8.1207	EG69_1207
	Mo-00084	15.9	13.7		K-Ar								Koechlinite	Mo	6800	Ashio Mine (Ashio Copper Mine), Ashio-machi, Nikko City, Tochigi, Japan		Shibata and Ishihara (1974)	10.2113/gsecongeo.69.8.1207	EG69_1207

Sample	Source Locality	Reference URL
R110207	Kyurasawa Mine (Kyuurasawa; Kyurazawa), Ashio-machi, Nikko City, Tochigi, Japan	https://rruff.info/R110207

All locality data graciously provided by mindat.org

All age data...