Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Ichinomegata crater, Oga peninsula, Oga City, Akita Prefecture, Japani
Regional Level Types
Ichinomegata craterCrater
Oga peninsulaPeninsula
Oga CityCity
Akita PrefecturePrefecture
JapanCountry

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Latitude & Longitude (WGS84):
39° 57' 16'' North , 139° 44' 20'' East
Latitude & Longitude (decimal):
39.95462,139.73911
GRN:
N27E78
Type:
Crater
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Tennō22,740 (2017)20.3km
Noshiro51,079 (2017)37.4km
Akita320,069 (2018)41.7km
Mindat Locality ID:
248081
Long-form identifier:
mindat:1:2:248081:0
GUID (UUID V4):
0


An 800 meter diameter crater which erupted basaltic lapilli and basaltic tuff breccia about 4,000 years ago. Included in this groundmass are xenolithic fragments of andesite, granodiorite, lherzolitic peridotite, garnet peridotite, gabbro, hornblende gabbro, and pyroxenite (specifically websterite).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘSpinel4.BB.05MgAl2O4
Group 9 - Silicates
ⓘPargasite9.DE.15NaCa2(Mg4Al)(Si6Al2)O22(OH)2
Unclassified
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Hornblende Root Name Group'-◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Orthopyroxene Subgroup'-

List of minerals for each chemical element

HHydrogen
Hⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Hⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
OOxygen
Oⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Oⓘ SpinelMgAl2O4
Oⓘ Fayalite-Forsterite Series
Oⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Oⓘ Garnet GroupX3Z2(SiO4)3
FFluorine
Fⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
NaSodium
Naⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
MgMagnesium
Mgⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Mgⓘ SpinelMgAl2O4
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Alⓘ SpinelMgAl2O4
Alⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SiSilicon
Siⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Siⓘ Fayalite-Forsterite Series
Siⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Siⓘ Garnet GroupX3Z2(SiO4)3
ClChlorine
Clⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
CaCalcium
Caⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Caⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
FeIron
Feⓘ Fayalite-Forsterite Series

Other Regions, Features and Areas containing this locality

AsiaContinent
Eurasian Plate
Japan
Okhotsk PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
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