Mineral Evolution Database

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

Mineral locality data provided by mindat.org

Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.

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:
Mitake, Nishiki-cho, Iwakuni City, Yamaguchi, Japan

Oldest recorded age at locality: 97.4
Youngest recorded age at locality: 88.4

mindat Locality ID: 231632
mindat URL: http://www.mindat.org/loc-231632.html

Tectonic Settings:

Total number of sublocalities beneath "Mitake, Nishiki-cho, Iwakuni City, Yamaguchi, Japan": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Mitake Serpentinite

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.

Amphibole	Calcite	Clay	Clinozoisite	Epidote	None	Pyroxene	Quartz	Serpentine	Spinel
Talc

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 C Ca Cr Fe H Mg O Si

Elements from minerals reported directly at this locality: Al Ca Fe H O Si

Structural Groups for minerals in this locality:
Amphibole Calcite Clay Clinozoisite Epidote None Pyroxene Quartz Serpentine Spinel
Talc

12 IMA Minerals at location:

Actinolite ()*	Antigorite ()*	Calcite ()*	Chromite ()*	Diopside ()*
Dolomite ()*	Epidote ()*	Lizardite ()*	Magnesite ()*	Magnetite ()*
Quartz ()*	Talc ()*

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	1	76857	3419
Antigorite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	97.4	88.4	1	76857	708
Calcite ()*	Calcite	Ca(CO₃)	97.4	88.4	1	76857	27770
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	97.4	88.4	1	76857	3902
Diopside ()*	Pyroxene	CaMgSi₂O₆	97.4	88.4	1	76857	4135
Dolomite ()*	None	CaMg(CO₃)₂	97.4	88.4	1	76857	9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	97.4	88.4	0		8173
Lizardite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	97.4	88.4	1	76857	359
Magnesite ()*	Calcite	Mg(CO₃)	97.4	88.4	1	76857	1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	97.4	88.4	1	76857	14899
Quartz ()*	Quartz	SiO₂	97.4	88.4	1	76857	61156
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	97.4	88.4	1	76857	3337

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
	Kristen001927	97.4	91.8	94.6±2.8	K-Ar			muscovite	69FD-79		Yes	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			Yes	Muscovite			11275	Fujigatani Mine, Iwakuni City, Yamaguchi, Japan	Fujigatani	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...