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:
Tokoro-gun, Okhotsk Subprefecture (Abashiri Province), Hokkaidō, Japan

mindat Locality ID: 133815
mindat URL: http://www.mindat.org/loc-133815.html

Tectonic Settings:

Total number of sublocalities beneath "Tokoro-gun, Okhotsk Subprefecture (Abashiri Province), Hokkaidō, Japan": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Asahi Mine
Itomuka Mine
Nikura Mine
Oketo-cho
Wakasa Mine

Latitude: 43°40'58"N
Longitude: 143°9'59"E
Decimal Degree (lat, lon): 43.682777777778,143.16638888889

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.

Andalusite	Beryl	Calcite	Chlorite	Clay	Feldspar	Ferrierite	Fluorite	Gadolinite	Marcasite
Mica	None	Not in a structural group	Pyrite	Quartz	Smectite-vermiculite	Sphalerite	Topaz	Tourmaline

Albite ()*	Andalusite ()*	Calcite ()*	Chamosite ()*	Cinnabar ()*
Cordierite ()*	Datolite ()*	Dravite ()*	Ferrierite-Mg ()*	Fluorite ()*
Macfallite ()*	Marcasite ()*	Mercury ()*	Metacinnabar ()*	Montmorillonite ()*
Muscovite ()*	Orientite ()*	Pyrite ()*	Quartz ()*	Schorl ()*
Sillimanite ()*	Topaz ()*

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 B C Ca F Fe H Hg K Mg Mn Na O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Andalusite Beryl Calcite Chlorite Clay Feldspar Ferrierite Fluorite Gadolinite Marcasite
Mica None Not in a structural group Pyrite Quartz Smectite-vermiculite Sphalerite Topaz Tourmaline

22 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	74739	8803
Andalusite ()*	Andalusite	Al₂SiO₅	1	74739	1310
Calcite ()*	Calcite	Ca(CO₃)	1	74737	27770
Chamosite ()*	Chlorite Clay	(Fe²⁺,Mg,Al,Fe³⁺)₆(Si,Al)₄O₁₀(OH,O)₈	1	74739	577
Cinnabar ()*	None	HgS	2	74736,74737	2600
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	1	74739	1008
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	1	74739	498
Dravite ()*	Tourmaline	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	1	74739	648
Ferrierite-Mg ()*	Ferrierite	[Mg₂(K,Na)₂Ca_0.5](Si₂₉Al₇)O₇₂·18H₂O	1	74737	34
Fluorite ()*	Fluorite	CaF₂	1	74739	9617
Macfallite ()*	None	Ca₂Mn³⁺₃(SiO₄)(Si₂O₇)(OH)₃	1	74740	6
Marcasite ()*	Marcasite	FeS₂	1	74737	5674
Mercury ()*	None	Hg	1	74737	397
Metacinnabar ()*	Sphalerite	HgS	1	74737	255
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	1	74739	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	74739	17380
Orientite ()*	None	Ca₈Mn³⁺₁₀(SiO₄)₃(Si₃O₁₀)₃(OH)₁₀·4H₂O	1	74740	8
Pyrite ()*	Pyrite	FeS₂	2	74737,74739	39462
Quartz ()*	Quartz	SiO₂	3	74736,74737,74739	61156
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	1	74739	2705
Sillimanite ()*	Not in a structural group	Al₂SiO₅	1	74739	1516
Topaz ()*	Topaz	Al₂SiO₄F₂	1	74739	1476

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...