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:
Iwakuni City, Yamaguchi, Japan

Oldest recorded age at locality: 98.7
Youngest recorded age at locality: 88.4

mindat Locality ID: 157257
mindat URL: http://www.mindat.org/loc-157257.html

Tectonic Settings:

Total number of sublocalities beneath "Iwakuni City, Yamaguchi, Japan": 14
Total number of bottom-level sublocalities: 11

Number of Child Localities: 6
Child Localities:
Fujigatani Mine
Kiwada Mine
Kuga Mine (Kuka Mine)
Nishiki-cho
Renge Mine
Wagi Mine (Waki Mine)

Latitude: 34°8'40"N
Longitude: 132°1'0"E
Decimal Degree (lat, lon): 34.144444444444,132.01666666667

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.

Allophane	Alunite	Amphibole	Apatite	Arsenic	Arsenopyrite	Beryl	Brucite	Calcite	Cancrinite-sodalite
Chalcopyrite	Chlorite	Clay	Clinozoisite	Columbite	Corundum	Epidote	Feldspar	Fluorite	Garnet
Humite	Marcasite	Mica	Molybdenite	Nickeline	None	Olivine	Pyrite	Pyroxene	Quartz
Rhodonite	Rocksalt	Rutile	Scheelite	Serpentine	Sodalite	Sphalerite	Spinel	Stannite	Stibnite
Stilpnomelane	Talc	Tetradymite	Titanite	Vesuvianite	Wollastonite

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: Al As Be Bi C Ca Cr Cu F Fe H K Mg Mn Mo Na O P Pb S Se Si Sn Ti W Zn

Elements from minerals reported directly at this locality: As Fe H O Pb

Structural Groups for minerals in this locality:
Allophane Alunite Amphibole Apatite Arsenic Arsenopyrite Beryl Brucite Calcite Cancrinite-sodalite
Chalcopyrite Chlorite Clay Clinozoisite Columbite Corundum Epidote Feldspar Fluorite Garnet
Humite Marcasite Mica Molybdenite Nickeline None Olivine Pyrite Pyroxene Quartz
Rhodonite Rocksalt Rutile Scheelite Serpentine Sodalite Sphalerite Spinel Stannite Stibnite
Stilpnomelane Talc Tetradymite Titanite Vesuvianite Wollastonite

61 IMA Minerals at location:

Actinolite ()*	Alabandite ()*	Albite ()*	Alleghanyite ()*	Andradite ()*
Antigorite ()*	Arsenopyrite ()*	Bementite ()*	Bismuth ()*	Bismuthinite ()*
Calcite ()*	Cassiterite ()*	Chalcopyrite ()*	Chromite ()*	Clinochlore ()*
Cordierite ()*	Danalite ()*	Diopside ()*	Dolomite ()*	Epidote ()*
Ferro-actinolite ()*	Ferrobustamite ()*	Fluorapatite ()*	Fluorite ()*	Galaxite ()*
Galena ()*	Glaucophane ()*	Grossular ()*	Hedenbergite ()*	Hematite ()*
Hübnerite ()*	Laitakarite ()*	Lizardite ()*	Magnesite ()*	Magnetite ()*
Malayaite ()*	Marcasite ()*	Molybdenite ()*	Muscovite ()*	Neotocite ()*
Piemontite ()*	Pyrite ()*	Pyrochroite ()*	Pyrophanite ()*	Pyroxmangite ()*
Pyrrhotite ()*	Quartz ()*	Rhodochrosite ()*	Rhodonite ()*	Scheelite ()*
Segnitite ()*	Sonolite ()*	Sphalerite ()*	Stannite ()*	Stilpnomelane ()*
Talc ()*	Tephroite ()*	Titanite ()*	Tremolite ()*	Vesuvianite ()*
Wollastonite ()*

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
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	97.4	88.4	7	76847,76849,76855,76856,76857,76858,76859	3419
Alabandite ()*	Rocksalt	MnS	98.7	88.4	2	76848,76860	312
Albite ()*	Feldspar	Na(AlSi₃O₈)	97.4	88.4	1	76853	8803
Alleghanyite ()*	Humite	Mn²⁺₅(SiO₄)₂(OH)₂	97.4	88.4	1	76860	77
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	97.4	88.4	1	76847	1534
Antigorite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	97.4	88.4	2	76854,76857	708
Arsenopyrite ()*	Arsenopyrite	FeAsS	98.7	88.4	3	76847,76848,76849	9052
Bementite ()*	Clay	Mn₇Si₆O₁₅(OH)₈	97.4	88.4	1	76859	173
Bismuth ()*	Arsenic	Bi	97.4	88.4	2	76847,76849	1966
Bismuthinite ()*	Stibnite	Bi₂S₃	97.4	88.4	2	76847,76849	1935
Calcite ()*	Calcite	Ca(CO₃)	98.7	88.4	6	76847,76848,76849,76851,76854,76857	27770
Cassiterite ()*	Rutile	SnO₂	98.7	88.4	2	76848,76849	5171
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	98.7	88.4	4	76847,76848,76849,76853	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	97.4	88.4	2	76854,76857	3902
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	97.4	88.4	1	76853	1756
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	97.4	88.4	1	76852	1008
Danalite ()*	Cancrinite-sodalite Sodalite	Be₃Fe²⁺₄(SiO₄)₃S	98.7	88.4	2	76847,76848	58
Diopside ()*	Pyroxene	CaMgSi₂O₆	97.4	88.4	3	76847,76849,76857	4135
Dolomite ()*	None	CaMg(CO₃)₂	97.4	88.4	2	76854,76857	9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	97.4	88.4	5	76847,76849,76855,76856,76858	8173
Ferro-actinolite ()*	Amphibole	Ca₂(Mg_2.5-0.0Fe²⁺_2.5-5.0)Si₈O₂₂(OH)₂	97.4	88.4	1	76847	129
Ferrobustamite ()*	Wollastonite	CaFe²⁺Si₂O₆	97.4	88.4	1	76847	22
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	98.7	92.9	1	76848	2740
Fluorite ()*	Fluorite	CaF₂	98.7	88.4	3	76847,76848,76849	9617
Galaxite ()*	Spinel	Mn²⁺Al₂O₄	97.4	88.4	1	76859	43
Galena ()*	Rocksalt	PbS	97.4	88.4	2	76847,76849	24243
Glaucophane ()*	Amphibole	Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂	97.4	88.4	2	76855,76858	286
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃	97.4	88.4	1	76847	1544
Hedenbergite ()*	Pyroxene	CaFe²⁺Si₂O₆	98.7	88.4	3	76847,76848,76849	741
Hematite ()*	Corundum	Fe₂O₃	97.4	88.4	1	76853	14640
Hübnerite ()*	Columbite	Mn²⁺(WO₄)	97.4	88.4	1	76859	469
Laitakarite ()*	Tetradymite	Bi₄(Se,S)₃	97.4	88.4	1	76849	30
Lizardite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	97.4	88.4	2	76854,76857	359
Magnesite ()*	Calcite	Mg(CO₃)	97.4	88.4	2	76854,76857	1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	98.7	88.4	3	76848,76854,76857	14899
Malayaite ()*	Titanite	CaSnO(SiO₄)	98.7	88.4	4	76848,76849,76850,76851	40
Marcasite ()*	Marcasite	FeS₂	97.4	88.4	2	76849,76853	5674
Molybdenite ()*	Molybdenite	MoS₂	98.7	88.4	2	76847,76848	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	97.4	88.4	3	76847,76849,76852	17380
Neotocite ()*	Allophane	(Mn,Fe)SiO₃·H₂O (?)	97.4	88.4	1	76859	186
Piemontite ()*	Epidote	Ca₂(Al₂Mn³⁺)[Si₂O₇][SiO₄]O(OH)	97.4	88.4	1	76853	260
Pyrite ()*	Pyrite	FeS₂	97.4	88.4	4	76847,76849,76853,76859	39462
Pyrochroite ()*	Brucite	Mn²⁺(OH)₂	97.4	88.4	1	76860	56
Pyrophanite ()*	Corundum	Mn²⁺TiO₃	97.4	88.4	1	76859	244
Pyroxmangite ()*	None	Mn²⁺SiO₃	97.4	88.4	2	76859,76860	147
Pyrrhotite ()*	Nickeline	Fe₇S₈	98.7	88.4	5	76847,76848,76849,76853,76859	9056
Quartz ()*	Quartz	SiO₂	98.7	88.4	8	76847,76848,76849,76850,76851,76854,76857,76859	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	97.4	88.4	1	76860	1711
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)	97.4	88.4	2	76859,76860	969
Scheelite ()*	Scheelite	Ca(WO₄)	98.7	88.4	6	76847,76848,76849,76850,76851,76852	4894
Segnitite ()*	Alunite	PbFe³⁺₃(AsO₄)(AsO₃OH)(OH)₆	98.7	88.4	0		134
Sonolite ()*	Humite	Mn²⁺₉(SiO₄)₄(OH)₂	97.4	88.4	1	76860	50
Sphalerite ()*	Sphalerite	ZnS	98.7	88.4	4	76847,76848,76849,76859	21482
Stannite ()*	Stannite Sphalerite	Cu₂FeSnS₄	97.4	88.4	1	76849	668
Stilpnomelane ()*	Stilpnomelane Clay	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆·nH₂O	98.7	88.4	3	76847,76848,76853	456
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	97.4	88.4	1	76857	3337
Tephroite ()*	Olivine	Mn²⁺₂(SiO₄)	97.4	88.4	2	76859,76860	240
Titanite ()*	Titanite	CaTi(SiO₄)O	97.4	88.4	2	76847,76853	4899
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	97.4	88.4	1	76859	2562
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀	98.7	88.4	2	76847,76848	1395
Wollastonite ()*	Wollastonite	CaSiO₃	98.7	88.4	3	76847,76848,76851	1247

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Sample Source	Sample Num	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
Kristen001927	97.4	91.8	94.6±2.8	K-Ar	muscovite	69FD-79	Muscovite	11275	Fujigatani Mine, Iwakuni City, Yamaguchi, Japan	Fujigatani	Shibata and Ishihara (1974)	10.2113/gsecongeo.69.8.1207	EG69_1207
Kristen001928	95.8	88.4	92.1±3.7	K-Ar	muscovite		Muscovite	11275	Fujigatani Mine, Iwakuni City, Yamaguchi, Japan	Fujigatani	Shibata and Ishihara (1974)	10.2113/gsecongeo.69.8.1207	EG69_1207
Kristen001929	98.7	92.9	95.8±2.9	K-Ar	muscovite		Muscovite	185505	Kiwada Mine, Iwakuni City, Yamaguchi, Japan	Kiwada	Shibata and Ishihara (1974)	10.2113/gsecongeo.69.8.1207	EG69_1207

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...