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:
Iwo Jima (Iou-to; Iou Island; Iwojima; Iou-jima; Naka-Iou-jima), Volcano Islands (Kazan Rettou), Tokyo, Japan

mindat Locality ID: 32061
mindat URL: http://www.mindat.org/loc-32061.html

Tectonic Settings:

Total number of sublocalities beneath "Iwo Jima (Iou-to; Iou Island; Iwojima; Iou-jima; Naka-Iou-jima), Volcano Islands (Kazan Rettou), Tokyo, Japan": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Motoyama Plateau
Suribachiyama

Latitude: 24°46'7"N
Longitude: 141°18'15"E
Decimal Degree (lat, lon): 24.768611111111,141.30416666667

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.

Amorphous	Calcite	Corundum	Feldspar	Gypsum	None	Olivine	Pyroxene	Spinel	Sulphur

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 Fe H Mg Na O S Si

Elements from minerals reported directly at this locality: Al Ca Mg O Si

Structural Groups for minerals in this locality:
Amorphous Calcite Corundum Feldspar Gypsum None Olivine Pyroxene Spinel Sulphur

11 IMA Minerals at location:

Aegirine ()*	Albite ()*	Anorthite ()*	Augite ()*	Calcite ()*
Forsterite ()*	Gypsum ()*	Hematite ()*	Magnetite ()*	Opal ()*
Sulphur ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	1	76698	1022
Albite ()*	Feldspar	Na(AlSi₃O₈)	2	76697,76698	8803
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	0		1036
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	2	76697,76698	2060
Calcite ()*	Calcite	Ca(CO₃)	2	76697,76698	27770
Forsterite ()*	Olivine	Mg₂(SiO₄)	0		1188
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	1	76698	6890
Hematite ()*	Corundum	Fe₂O₃	1	76698	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	2	76697,76698	14899
Opal ()*	Amorphous	SiO₂·nH₂O	1	76698	2994
Sulphur ()*	Sulphur	S	1	76698	2045

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...