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:
Izu Archipelago, Tokyo, Japan

mindat Locality ID: 41050
mindat URL: http://www.mindat.org/loc-41050.html

Tectonic Settings:

Total number of sublocalities beneath "Izu Archipelago, Tokyo, Japan": 25
Total number of bottom-level sublocalities: 15

Number of Child Localities: 10
Child Localities:
Aogashima
Bayonnaise Rocks
Hachijo Island (Hachijyojima; Hachijojima)
Kouzu-shima
Miyake Island (Miyake-jima)
Niijima Island
Nishi Shichito Ridge
Oushima Island (Ohshima; Oshima)
Suiyo Seamount
Tori Island (Torishima)

Latitude: 33°4'9"N
Longitude: 139°37'24"E
Decimal Degree (lat, lon): 33.069166666667,139.62333333333

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	Alunite	Amorphous	Amphibole	Aragonite	Atacamite	Baryte	Calcite	Chalcopyrite	Clay
Copper	Corundum	Feldspar	Gypsum	Kaolinite	Mica	Milarite	None	Not in a structural group	Olivine
Pyrite	Pyroxene	Quartz	Rocksalt	Sphalerite	Spinel	Tetrahedrite	Volborthite

Albite ()*	Anhydrite ()*	Anorthite ()*	Aragonite ()*	Atacamite ()*
Augite ()*	Baryte ()*	Birnessite ()*	Buserite ()*	Calcite ()*
Chalcopyrite ()*	Chrysocolla ()*	Copper ()*	Cummingtonite ()*	Cuprite ()*
Forsterite ()*	Gypsum ()*	Hematite ()*	Kaolinite ()*	Kremersite ()*
Magnetite ()*	Muscovite ()*	Natroalunite ()*	Opal ()*	Osumilite ()*
Pyrite ()*	Quartz ()*	Sphalerite ()*	Sylvite ()*	Tenorite ()*
Tetrahedrite-(Zn) ()*	Todorokite ()*	Vernadite ()*	Volborthite ()*	Zinc ()*

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 C Ca Cl Cu Fe H K Mg Mn N Na O S Sb Si Sr V Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Alunite Amorphous Amphibole Aragonite Atacamite Baryte Calcite Chalcopyrite Clay
Copper Corundum Feldspar Gypsum Kaolinite Mica Milarite None Not in a structural group Olivine
Pyrite Pyroxene Quartz Rocksalt Sphalerite Spinel Tetrahedrite Volborthite

35 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	76652	8803
Anhydrite ()*	Not in a structural group	Ca(SO₄)	1	76657	1588
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	7	76634,76640,76641,76645,76647,76650,76655	1036
Aragonite ()*	Aragonite	Ca(CO₃)	1	76638	3250
Atacamite ()*	Atacamite	Cu₂Cl(OH)₃	3	76641,76650,76656	544
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	3	76645,76650,76658	2060
Baryte ()*	Baryte	Ba(SO₄)	1	76657	11547
Birnessite ()*	None	(Na,Ca,K)_0.6(Mn⁴⁺,Mn³⁺)₂O₄·1.5H₂O	2	76634,76654	178
Buserite ()*	None	Na₄Mn₁₄O₂₇·21H₂O (?)	1	76654	10
Calcite ()*	Calcite	Ca(CO₃)	1	76638	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1	76657	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	2	76634,76641	3531
Copper ()*	Copper	Cu	5	76634,76640,76645,76647,76650	3846
Cummingtonite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	1	76652	327
Cuprite ()*	Not in a structural group	Cu₂O	1	76650	2970
Forsterite ()*	Olivine	Mg₂(SiO₄)	5	76634,76645,76647,76650,76658	1188
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	2	76634,76658	6890
Hematite ()*	Corundum	Fe₂O₃	3	76634,76641,76650	14640
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1	76636	5591
Kremersite ()*	None	(NH₄)₂Fe³⁺Cl₅·H₂O	1	76650	12
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	76645	14899
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	76657	17380
Natroalunite ()*	Alunite	NaAl₃(SO₄)₂(OH)₆	1	76636	128
Opal ()*	Amorphous	SiO₂·nH₂O	2	76634,76645	2994
Osumilite ()*	Milarite	KFe₂(Al₅Si₁₀)O₃₀	1	76649	15
Pyrite ()*	Pyrite	FeS₂	1	76657	39462
Quartz ()*	Quartz	SiO₂	2	76652,76657	61156
Sphalerite ()*	Sphalerite	ZnS	1	76657	21482
Sylvite ()*	Rocksalt	KCl	1	76656	275
Tenorite ()*	None	CuO	2	76650,76656	1101
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	1	76650	5317
Todorokite ()*	None	(Na,Ca,K,Ba,Sr)_1-x(Mn,Mg,Al)₆O₁₂·3-4H₂O	1	76634	433
Vernadite ()*	None	(Mn,Fe,Ca,Na)(O,OH)₂·nH₂O	1	76654	65
Volborthite ()*	Volborthite	Cu₃V₂O₇(OH)₂·2H₂O	1	76641	155
Zinc ()*	None	Zn	1	76645	52

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL
R040059	Miyake Island (Miyake-jima), Izu Archipelago, Tokyo, Japan	https://rruff.info/R040059
X050021	Miyake Island (Miyake-jima), Izu Archipelago, Tokyo, Japan	https://rruff.info/X050021

All locality data graciously provided by mindat.org

All age data...