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:
Hitachi-machi, Taga District, Ibaraki, Japan

Oldest recorded age at locality: 320
Youngest recorded age at locality: 320

mindat Locality ID: 156419
mindat URL: http://www.mindat.org/loc-156419.html

Tectonic Settings:

Total number of sublocalities beneath "Hitachi-machi, Taga District, Ibaraki, Japan": 3
Total number of bottom-level sublocalities: 2

Number of Child Localities: 1
Child Localities:
Hitachi Mine

Latitude: 36°37'15"N
Longitude: 140°36'46"E
Decimal Degree (lat, lon): 36.620833333333,140.61277777778

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	Andalusite	Arsenic	Baryte	Beryl	Chalcopyrite	Chloritoid	Clay	Dumortierite	Epsomite
Gypsum	Marcasite	Mica	Nickeline	None	Not in a structural group	Pyrite	Quartz	Rocksalt	Sphalerite
Spinel	Tetradymite

Andalusite ()*	Anhydrite ()*	Anthophyllite ()*	Arsenic ()*	Baryte ()*
Chalcopyrite ()*	Chloritoid ()*	Cordierite ()*	Dumortierite ()*	Epsomite ()*
Galena ()*	Gypsum ()*	Hitachiite ()*	Magnetite ()*	Marcasite ()*
Muscovite ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Sphalerite ()*

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 B Ba Bi Ca Cu Fe H K Mg O Pb S Si Te Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Andalusite Arsenic Baryte Beryl Chalcopyrite Chloritoid Clay Dumortierite Epsomite
Gypsum Marcasite Mica Nickeline None Not in a structural group Pyrite Quartz Rocksalt Sphalerite
Spinel Tetradymite

20 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
Andalusite ()*	Andalusite	Al₂SiO₅	320	320	1	75001	1310
Anhydrite ()*	Not in a structural group	Ca(SO₄)	320	320	1	75001	1588
Anthophyllite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	320	320	1	75001	718
Arsenic ()*	Arsenic	As	320	320	1	75001	379
Baryte ()*	Baryte	Ba(SO₄)	320	320	1	75001	11547
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	320	320	3	75001,75002,75003	27198
Chloritoid ()*	Chloritoid	Fe²⁺Al₂O(SiO₄)(OH)₂	320	320	1	75001	376
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	320	320	1	75001	1008
Dumortierite ()*	Dumortierite	AlAl₆BSi₃O₁₈	320	320	1	75001	231
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O	320	320	1	75001	484
Galena ()*	Rocksalt	PbS	320	320	2	75001,75002	24243
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	320	320	1	75001	6890
Hitachiite ()*	Tetradymite	Pb₅Bi₂Te₂S₆	320	320	1	75002	1
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	320	320	1	75001	14899
Marcasite ()*	Marcasite	FeS₂	320	320	2	75001,75002	5674
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	320	320	1	75001	17380
Pyrite ()*	Pyrite	FeS₂	320	320	3	75001,75002,75003	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	320	320	2	75001,75002	9056
Quartz ()*	Quartz	SiO₂	320	320	1	75001	61156
Sphalerite ()*	Sphalerite	ZnS	320	320	2	75001,75002	21482

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
	vms-00524	320	320	Carboniferous										S	28724	Hitachi Mine, Hitachi-machi, Taga District, Ibaraki, Japan	Hitachi	Moiser et al. (2009)		USGSOFR2009_1034

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...