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:
Hiroo-gun, Tokachi Subprefecture, Hokkaidō, Japan

mindat Locality ID: 31064
mindat URL: http://www.mindat.org/loc-31064.html

Tectonic Settings:

Total number of sublocalities beneath "Hiroo-gun, Tokachi Subprefecture, Hokkaidō, Japan": 5
Total number of bottom-level sublocalities: 4

Number of Child Localities: 1
Child Localities:
Hiroo-mura

Latitude: 42°24'59"N
Longitude: 143°15'0"E
Decimal Degree (lat, lon): 42.416388888889,143.25

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	Chalcopyrite	Corundum	Nickeline	None	Pentlandite	Pyrite	Pyroxene	Quartz	Spinel

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 Cu Fe H Mg Ni O S Si Ti

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Chalcopyrite Corundum Nickeline None Pentlandite Pyrite Pyroxene Quartz Spinel

11 IMA Minerals at location:

Allophane ()*	Chalcopyrite ()*	Diopside ()*	Graphite ()*	Ilmenite ()*
Magnetite ()*	Pentlandite ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*
Violarite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Allophane ()*	Allophane	Al₂O₃(SiO₂)_1.3-2.0·2.5-3.0H₂O	1	74845	470
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1	74847	27198
Diopside ()*	Pyroxene	CaMgSi₂O₆	1	74847	4135
Graphite ()*	None	C	1	74847	2812
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	1	74847	5433
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	74847	14899
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	1	74847	1512
Pyrite ()*	Pyrite	FeS₂	1	74847	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	1	74847	9056
Quartz ()*	Quartz	SiO₂	1	74847	61156
Violarite ()*	Spinel	FeNi₂S₄	1	74847	380

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...