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:
Toyomane Mine, Yamada, Shimohei District, Iwate, Japan

mindat Locality ID: 218332
mindat URL: http://www.mindat.org/loc-218332.html

Tectonic Settings:

Total number of sublocalities beneath "Toyomane Mine, Yamada, Shimohei District, 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.

Calcite	None	Ramsdellite	Rhodonite	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: C Ca Fe H K Mn Na O Si

Elements from minerals reported directly at this locality: C Ca Fe H K Mn Na O Si

Structural Groups for minerals in this locality:
Calcite None Ramsdellite Rhodonite Spinel

6 IMA Minerals at location:

Birnessite ()*	Hausmannite ()*	Jacobsite ()*	Nsutite ()*	Rhodochrosite ()*
Rhodonite ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Birnessite ()*	None	(Na,Ca,K)_0.6(Mn⁴⁺,Mn³⁺)₂O₄·1.5H₂O	178
Hausmannite ()*	Spinel	Mn²⁺Mn³⁺₂O₄	350
Jacobsite ()*	Spinel	Mn²⁺Fe³⁺₂O₄	172
Nsutite ()*	Ramsdellite	Mn²⁺_xMn⁴⁺_1-xO_2-2x(OH)_2x	121
Rhodochrosite ()*	Calcite	Mn(CO₃)	1711
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)	969

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...