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:
Tachikawa Mine, Karumai-cho, Kunohe-gun, Iwate, Japan

Oldest recorded age at locality: 201
Youngest recorded age at locality: 145

mindat Locality ID: 204445
mindat URL: http://www.mindat.org/loc-204445.html

Tectonic Settings:

Total number of sublocalities beneath "Tachikawa Mine, Karumai-cho, Kunohe-gun, Iwate, Japan": 0
Total number of bottom-level sublocalities: 0

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.

Braunite	Coronadite	Corundum	None	Quartz	Ramsdellite	Rutile

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 Ba Ca Fe H K Mg Mn Na O Si Sr

Elements from minerals reported directly at this locality: Al Ba Ca Fe H K Mg Mn Na O Si Sr

Structural Groups for minerals in this locality:
Braunite Coronadite Corundum None Quartz Ramsdellite Rutile

8 IMA Minerals at location:

Braunite ()*	Cryptomelane ()*	Hematite ()*	Manjiroite ()*	Nsutite ()*
Pyrolusite ()*	Quartz ()*	Todorokite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Braunite ()*	Braunite	Mn²⁺Mn³⁺₆O₈(SiO₄)	201	145	483
Cryptomelane ()*	Coronadite	K(Mn⁴⁺₇Mn³⁺)O₁₆	201	145	599
Hematite ()*	Corundum	Fe₂O₃	201	145	14640
Manjiroite ()*	Coronadite	Na(Mn⁴⁺₇Mn³⁺)O₁₆	201	145	22
Nsutite ()*	Ramsdellite	Mn²⁺_xMn⁴⁺_1-xO_2-2x(OH)_2x	201	145	121
Pyrolusite ()*	Rutile	MnO₂	201	145	3106
Quartz ()*	Quartz	SiO₂	201	145	61156
Todorokite ()*	None	(Na,Ca,K,Ba,Sr)_1-x(Mn,Mg,Al)₆O₁₂·3-4H₂O	201	145	433

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Scott-CGSSWAN3_33-0001	mine

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
	Scott-CGSSWAN3_33-0001	201	145	Jurassic		Age of deposition					Yes			Mn	2200	Funakozawa Mine, Ono, Hirono-cho, Kunohe-gun, Iwate, Japan	Funakozawa Mine	Schneider (1987)		CGSSWAN3_33	P. 1

All locality data graciously provided by mindat.org

All age data...