LeMasurier, W.E., Rex, D.C. (1982) Volcanic record of Cenozoic glacial history in Marie Byrd Land and Western Ellsworth Land: Revised chronology and evaluation of tectonic factors. In: Craddock, C. (ed.) (1977) Antarctic Geoscience, University of Wisconsin Press, Madison, WI, 725-734.

ⓘ 'Amphibole Supergroup'

Formula: AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂

References:

Boudette, Eugene L., Ford, Arthur B. (1966) Physical properties of anorthoclase from Antarctica. American Mineralogist, 51 (9-10) 1374-1387

LeMasurier, W.E., Rex, D.C. (1982) Eruptive potential of volcanoes in Marie Byrd Land. Antarctic Journal of the United States, 17, 34-36.

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

References:

Boudette, Eugene L., Ford, Arthur B. (1966) Physical properties of anorthoclase from Antarctica. American Mineralogist, 51 (9-10) 1374-1387

LeMasurier, W.E., Rex, D.C. (1982) Eruptive potential of volcanoes in Marie Byrd Land. Antarctic Journal of the United States, 17, 34-36.

ⓘ 'Clinopyroxene Subgroup'

References:

Boudette, Eugene L., Ford, Arthur B. (1966) Physical properties of anorthoclase from Antarctica. American Mineralogist, 51 (9-10) 1374-1387

LeMasurier, W.E., Rex, D.C. (1982) Eruptive potential of volcanoes in Marie Byrd Land. Antarctic Journal of the United States, 17, 34-36.

ⓘ 'Fayalite-Forsterite Series'

References:

Boudette, Eugene L., Ford, Arthur B. (1966) Physical properties of anorthoclase from Antarctica. American Mineralogist, 51 (9-10) 1374-1387

LeMasurier, W.E., Rex, D.C. (1982) Eruptive potential of volcanoes in Marie Byrd Land. Antarctic Journal of the United States, 17, 34-36.

ⓘ 'Glass'

References:

Boudette, Eugene L., Ford, Arthur B. (1966) Physical properties of anorthoclase from Antarctica. American Mineralogist, 51 (9-10) 1374-1387

LeMasurier, W.E., Rex, D.C. (1982) Eruptive potential of volcanoes in Marie Byrd Land. Antarctic Journal of the United States, 17, 34-36.

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

Boudette, Eugene L., Ford, Arthur B. (1966) Physical properties of anorthoclase from Antarctica. American Mineralogist, 51 (9-10) 1374-1387

LeMasurier, W.E., Rex, D.C. (1982) Eruptive potential of volcanoes in Marie Byrd Land. Antarctic Journal of the United States, 17, 34-36.

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

Boudette, Eugene L., Ford, Arthur B. (1966) Physical properties of anorthoclase from Antarctica. American Mineralogist, 51 (9-10) 1374-1387

LeMasurier, W.E., Rex, D.C. (1982) Eruptive potential of volcanoes in Marie Byrd Land. Antarctic Journal of the United States, 17, 34-36.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
Group 9 - Silicates
ⓘ	Augite	9.DA.15	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Unclassified
ⓘ	'Alkali Feldspar'	-
ⓘ	'Amphibole Supergroup'	-	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Glass'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
O	Oxygen
O	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Fayalite-Forsterite Series
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
F	Fluorine
F	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Na	Sodium
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Fayalite-Forsterite Series
Al	Aluminium
Al	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Fayalite-Forsterite Series
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Cl	Chlorine
Cl	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Ca	Calcium
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ti	Titanium
Ti	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Fe	Iron
Fe	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Fayalite-Forsterite Series

Geochronology

Mineralization age: Miocene : 8.35 ± 0.3 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic Time

Rocks, Minerals and Events

8.35 ± 0.3 Ma

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Mount_Steere
Wikidata ID:	Q264074
GeoNames ID:	6626001

Other Regions, Features and Areas containing this locality

Antarctic MeteoritesGroup of Meteorite Fall Locations

Antarctic PlateTectonic Plate

Marie Byrd LandMagmatic Province

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.

References

Boudette, Eugene L., Ford, Arthur B. (1966) Physical properties of anorthoclase from Antarctica. American Mineralogist, 51 (9-10) 1374-1387

LeMasurier, W.E., Rex, D.C. (1982) Eruptive potential of volcanoes in Marie Byrd Land. Antarctic Journal of the United States, 17, 34-36.

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