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.

ⓘ 'Alkali Feldspar'

Locality: Mount Steere, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

References:

Boudette, E.L., Ford, A.B. (1966) Physical properties of anorthoclase from Antarctica. The 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.

ⓘ 'Amphibole Supergroup'

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

Locality: Mount Steere, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

References:

Boudette, E.L., Ford, A.B. (1966) Physical properties of anorthoclase from Antarctica. The 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

Locality: Mount Steere, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

References:

Boudette, E.L., Ford, A.B. (1966) Physical properties of anorthoclase from Antarctica. The 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'

Locality: Mount Steere, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

References:

Boudette, E.L., Ford, A.B. (1966) Physical properties of anorthoclase from Antarctica. The 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'

Localities:

Mount Frakes, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica
Mount Steere, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

ⓘ 'Glass'

Locality: Mount Steere, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

References:

Boudette, E.L., Ford, A.B. (1966) Physical properties of anorthoclase from Antarctica. The 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.

ⓘ Hedenbergite

Formula: CaFe²⁺Si₂O₆

Locality: Mount Frakes, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

References:

Boudette, E. L., & Ford, A. B. (1966). Physical properties of anorthoclase from Antarctica. American Mineralogist: Journal of Earth and Planetary Materials, 51(9-10), 1374-1387.

LeMasurier, W. E., & Rex, D. C. (1982). Eruptive potential of volcanoes in Marie Byrd Land. Antarct J Ama, 17, 34-36.

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. Antarctic Geoscience, 89, 725-734.

ⓘ Hedenbergite var. Ferrosalite

Locality: Mount Frakes, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

References:

Boudette, E.L., Ford, A.B. (1966) Physical properties of anorthoclase from Antarctica. The 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

Localities:

Mount Frakes, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica
Mount Steere, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

ⓘ Nepheline

Formula: Na₃K(Al₄Si₄O₁₆)

Locality: Mount Frakes, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

References:

Boudette, E.L., Ford, A.B. (1966) Physical properties of anorthoclase from Antarctica. The 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

Locality: Mount Steere, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

References:

Boudette, E.L., Ford, A.B. (1966) Physical properties of anorthoclase from Antarctica. The 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
ⓘ	Hedenbergite	9.DA.15	CaFe²⁺Si₂O₆
ⓘ	var. Ferrosalite	9.DA.15	CaFe²⁺Si₂O₆
ⓘ	Nepheline	9.FA.05	Na₃K(Al₄Si₄O₁₆)
ⓘ	Albite var. Anorthoclase	9.FA.35	(Na,K)AlSi₃O₈
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	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
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	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
Na	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Al	Aluminium
Al	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Al	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
Al	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Si	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
Si	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Cl	Chlorine
Cl	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
K	Potassium
K	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
K	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Ca	Calcium
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Hedenbergite	CaFe²⁺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	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄

Geochronology

Mineralization age: Cenozoic : 8.35 ± 0.3 Ma to 1.7 ± 0.2 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

ⓘ Basalt (youngest age)

1.7 ± 0.2 Ma

Mount Frakes, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

Neogene

Pliocene

ⓘ Phonolite

3.9 ± 0.4 Ma

Mount Frakes, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

Miocene

ⓘ Basalt (oldest age)

8.35 ± 0.3 Ma

Mount Steere, Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Crary_Mountains
Wikidata ID:	Q5182309
GeoNames ID:	6631608

Localities in this Region

Antarctica

Western Antarctica
- Marie Byrd Land
  - Crary Mountains
    - Mount Frakes
    - Mount Steere

Other Regions, Features and Areas containing this locality

Antarctic MeteoritesGroup of Meteorite Fall Locations

Antarctic 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.

References

Woolley, Alan R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe (excluding the former USSR), Australasia and Oceanic Islands. The Geological Society of London. doi:10.1144/mpar4p.6

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Crary Mountains, Marie Byrd Land, Western Antarctica, AntarcticaiRegional Level TypesCrary MountainsGroup of Mountains Marie Byrd LandArea Western AntarcticaRegion AntarcticaContinent function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Geochronology

Other Databases

Localities in this Region

Other Regions, Features and Areas containing this locality

References

Crary Mountains, Marie Byrd Land, Western Antarctica, Antarctica i
Regional Level Types
Crary Mountains Group of Mountains
Marie Byrd Land Area
Western Antarctica Region
Antarctica Continent