Straumsvola Mountain (72°7′S 0°20′W) is a prominent mountain 6 nautical miles (11 km) north of Jutulrora Mountain in the northwest part of the Sverdrup Mountains, overlooking the east side of Jutulstraumen Glacier in Queen Maud Land. Plotted from air photos by the German Antarctic Expedition (1938–39). Remapped by Norwegian cartographers from surveys and air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949–52) and air photos by the Norwegian expedition (1958–59) and named Straumsvola (the stream mountain). [Wikipedia]

Straumsvola is a nepheline syenite intrusive complex about 7 km in diameter, which intrudes gneisses of the Jutulrøra Formation (Svedrupfjella Group), located on the eastern edge of the Jutulstraumen Glacier (Ravich & Solov'yev, 1966 and 1969; Hjelle, 1972; Allen et al., 1986; Harris & Grantham, 1993). The Straumsvola nepheline syenite complex consists of a massive outer zone and a layered inner zone, whereas the adjacent nunatak 5 km to the southeast, Tvora, consists of quartz syenite (see http://www.mindat.org/loc-266652.html). The Straumsvola complex is exposed mostly on the nunatak Straumsvola itself, but it can be observed also at the easternmost Storjoen and Joungane nunataks.

The outer zone contains numerous pegmatite dykes (southeast ridge of Straumsvola and summit ridge of Storjoen) consisting of alkali feldspar, biotite, sodium-rich pyroxene, and amphibole. Such pegmatite dykes can contain cavities up to several metres in diametre, in which large, well-formed crystals of feldspar, amphibole, aegirine, zircon (up to 2 cm across), analcime, and natrolite are present. Natrolite prismatic crystals are partially enclosed by icositetrahedra of analcime.
The layered rocks are exclusively exposed on Straumsvola. Near the summit of Straumsvola, a more mafic facies unconformably overlies the layered zone.

A large number of Jurassic dykes cut the two plutons and the surrounding country-rocks. These dykes are extremely varied in composition and include nephelinites, pyroxenites, lamprophyres, dolerites, phonolites, and peralkaline microgranites. Jurassic dykes of western Dronning Maud Land dyke swarms are probably related to magmatism associated with the Karoo large igneous province in Africa.

In one unusual dyke of peralkaline granite, which crops out on the north ridge of Straumsvola at about 200 m from the summit and cuts both the nepheline syenite country-rock and several dolerite dykes, REE-rich eudialyte occurs together with the rare mineral dalyite (Harris & Rickard, 1987). In other dykes of peralkaline granite narsarsukite and vlasovite have been found (Harris & Grantham, 1993).

Eudialyte is found in fissures and vugs throughout the upper layered zone syenites and in one case as a major phase (up to 20 modal %) in a pegmatite dyke located 100 m south of Straumsvola summit (Harris & Grantham, 1993).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

28 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ 'Peralkaline microgranite'

ⓘ 'Tholeiitic basalt'

Detailed Mineral List:

ⓘ Aegirine

Formula: NaFe³⁺Si₂O₆

References:

Harris, C., Rickard, R. S. (1987): Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola, Dronning Maud Land, Antarctica. Canadian Mineralogist, 25, 755-762

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

Riley, T.R., Curtis, M.L., Leat, P.T., Millar, I.L. (2009): The geochemistry of Middle Jurassic dykes associated with the Straumsvola-Tvora alkaline plutons, Dronning Maud Land, Antarctica and their association with the Karoo large igneous province. Mineralogical Magazine, 73, 2, 205-226.

ⓘ Aegirine-augite

Formula: (Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Aenigmatite

Formula: Na₄[Fe²⁺₁₀Ti₂]O₄[Si₁₂O₃₆]

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Harris, C., & Rickard, R. S. (1987). Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola, Dronning Maud Land, Antarctica. Canadian Mineralogist, 25, 755-762.

ⓘ 'Alkali Feldspar'

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ 'Amphibole Supergroup'

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

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Analcime

Formula: Na(AlSi₂O₆) · H₂O

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ 'Apatite'

Formula: Ca₅(PO₄)₃(Cl/F/OH)

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532

ⓘ Arfvedsonite

Formula: [Na][Na₂][Fe²⁺₄Fe³⁺]Si₈O₂₂(OH)₂

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.11

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

References:

ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Calcite

Formula: CaCO₃

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ 'Chlorite Group'

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Dalyite

Formula: K₂ZrSi₆O₁₅

References:

Harris, C., & Rickard, R. S. (1987). Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola, Dronning Maud Land, Antarctica. Canadian Mineralogist, 25, 755-762.

Anthony, John W., Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. - Eds. (2016) Handbook of Mineralogy. https://www.handbookofmineralogy.org/

ⓘ Eudialyte

Formula: Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂

References:

Harris, C., & Rickard, R. S. (1987). Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola, Dronning Maud Land, Antarctica. Canadian Mineralogist, 25, 755-762

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ 'Fayalite-Forsterite Series'

References:

ⓘ 'Feldspar Group'

References:

ⓘ 'Feldspar Group var. Perthite'

References:

ⓘ Fluorite

Formula: CaF₂

References:

Harris, C., & Rickard, R. S. (1987). Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola, Dronning Maud Land, Antarctica. Canadian Mineralogist, 25, 755-762.

ⓘ Haüyne

Formula: Na₃Ca(Si₃Al₃)O₁₂(SO₄)

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ 'Iddingsite'

Formula: MgO · Fe₂O₃ · 3SiO₂ · 4H₂O

References:

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532

ⓘ Kalsilite

Formula: KAlSiO₄

References:

ⓘ Katophorite

Formula: {Na}{CaNa}{Mg₄Al}[(AlSi₇)O₂₂](OH)₂

References:

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532

ⓘ Microcline

Formula: K(AlSi₃O₈)

References:

Harris, C., & Rickard, R. S. (1987). Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola, Dronning Maud Land, Antarctica. Canadian Mineralogist, 25, 755-762.

ⓘ Narsarsukite

Formula: Na₄(Ti,Fe)₂[Si₈O₂₀](O,OH,F)₂

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Natrolite

Formula: Na₂Al₂Si₃O₁₀ · 2H₂O

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Nepheline

Formula: Na₃K(Al₄Si₄O₁₆)

References:

Harris, C., & Rickard, R. S. (1987). Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola, Dronning Maud Land, Antarctica. Canadian Mineralogist, 25, 755-762.

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532

ⓘ Pyrite

Formula: FeS₂

References:

ⓘ 'Pyrochlore Group'

Formula: A₂Nb₂(O,OH)₆Z

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Quartz

Formula: SiO₂

References:

Harris, C., & Rickard, R. S. (1987). Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola, Dronning Maud Land, Antarctica. Canadian Mineralogist, 25, 755-762

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Richterite

Formula: Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂

References:

ⓘ Sanidine

Formula: K(AlSi₃O₈)

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532

ⓘ 'Serpentine Subgroup'

Formula: D₃[Si₂O₅](OH)₄

References:

ⓘ Sodalite

Formula: Na₄(Si₃Al₃)O₁₂Cl

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Titanite

Formula: CaTi(SiO₄)O

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Vlasovite

Formula: Na₂ZrSi₄O₁₁

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

ⓘ Zircon

Formula: Zr(SiO₄)

References:

Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 3 - Halides
ⓘ	Fluorite	3.AB.25	CaF₂
Group 4 - Oxides and Hydroxides
ⓘ	'Pyrochlore Group'	4.00.	A₂Nb₂(O,OH)₆Z
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 9 - Silicates
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Eudialyte	9.CO.10	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
ⓘ	Augite	9.DA.15	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
ⓘ	Aegirine-augite	9.DA.20	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆
ⓘ	Aegirine	9.DA.25	NaFe³⁺Si₂O₆
ⓘ	Richterite	9.DE.20	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
ⓘ	Katophorite	9.DE.20	{Na}{CaNa}{Mg₄Al}[(AlSi₇)O₂₂](OH)₂
ⓘ	Arfvedsonite	9.DE.25	[Na][Na₂][Fe²⁺₄Fe³⁺]Si₈O₂₂(OH)₂
ⓘ	Aenigmatite	9.DH.40	Na₄[Fe²⁺₁₀Ti₂]O₄[Si₁₂O₃₆]
ⓘ	Narsarsukite	9.DJ.05	Na₄(Ti,Fe)₂[Si₈O₂₀](O,OH,F)₂
ⓘ	Vlasovite	9.DM.25	Na₂ZrSi₄O₁₁
ⓘ	Dalyite	9.EA.25	K₂ZrSi₆O₁₅
ⓘ	Kalsilite	9.FA.05	KAlSiO₄
ⓘ	Nepheline	9.FA.05	Na₃K(Al₄Si₄O₁₆)
ⓘ	Sanidine	9.FA.30	K(AlSi₃O₈)
ⓘ	Microcline	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	Haüyne	9.FB.10	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
ⓘ	Sodalite	9.FB.10	Na₄(Si₃Al₃)O₁₂Cl
ⓘ	Natrolite	9.GA.05	Na₂Al₂Si₃O₁₀ · 2H₂O
ⓘ	Analcime	9.GB.05	Na(AlSi₂O₆) · H₂O
Unclassified
ⓘ	'Feldspar Group'	-
ⓘ	'Chlorite Group'	-
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Amphibole Supergroup'	-	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
ⓘ	'Alkali Feldspar'	-
ⓘ	'Feldspar Group var. Perthite'	-
ⓘ	'Iddingsite'	-	MgO · Fe₂O₃ · 3SiO₂ · 4H₂O
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄
ⓘ	'Apatite'	-	Ca₅(PO₄)₃(Cl/F/OH)

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
H	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
H	ⓘ Arfvedsonite	[Na][Na₂][Fe₄²⁺Fe³⁺]Si₈O₂₂(OH)₂
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
H	ⓘ Narsarsukite	Na₄(Ti,Fe)₂[Si₈O₂₀](O,OH,F)₂
H	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
H	ⓘ Pyrochlore Group	A₂Nb₂(O,OH)₆Z
H	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
H	ⓘ Iddingsite	MgO · Fe₂O₃ · 3SiO₂ · 4H₂O
H	ⓘ Katophorite	{Na}{CaNa}{Mg₄Al}[(AlSi₇)O₂₂](OH)₂
H	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
H	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Aegirine	NaFe³⁺Si₂O₆
O	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
O	ⓘ Aenigmatite	Na₄[Fe₁₀²⁺Ti₂]O₄[Si₁₂O₃₆]
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
O	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	ⓘ Arfvedsonite	[Na][Na₂][Fe₄²⁺Fe³⁺]Si₈O₂₂(OH)₂
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Calcite	CaCO₃
O	ⓘ Dalyite	K₂ZrSi₆O₁₅
O	ⓘ Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
O	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Kalsilite	KAlSiO₄
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Narsarsukite	Na₄(Ti,Fe)₂[Si₈O₂₀](O,OH,F)₂
O	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
O	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
O	ⓘ Pyrochlore Group	A₂Nb₂(O,OH)₆Z
O	ⓘ Quartz	SiO₂
O	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
O	ⓘ Sanidine	K(AlSi₃O₈)
O	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Vlasovite	Na₂ZrSi₄O₁₁
O	ⓘ Zircon	Zr(SiO₄)
O	ⓘ Iddingsite	MgO · Fe₂O₃ · 3SiO₂ · 4H₂O
O	ⓘ Katophorite	{Na}{CaNa}{Mg₄Al}[(AlSi₇)O₂₂](OH)₂
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
O	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
F	Fluorine
F	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
F	ⓘ Fluorite	CaF₂
F	ⓘ Narsarsukite	Na₄(Ti,Fe)₂[Si₈O₂₀](O,OH,F)₂
F	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Na	Sodium
Na	ⓘ Aegirine	NaFe³⁺Si₂O₆
Na	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Na	ⓘ Aenigmatite	Na₄[Fe₁₀²⁺Ti₂]O₄[Si₁₂O₃₆]
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Na	ⓘ Arfvedsonite	[Na][Na₂][Fe₄²⁺Fe³⁺]Si₈O₂₂(OH)₂
Na	ⓘ Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
Na	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
Na	ⓘ Narsarsukite	Na₄(Ti,Fe)₂[Si₈O₂₀](O,OH,F)₂
Na	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Na	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Na	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
Na	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Na	ⓘ Vlasovite	Na₂ZrSi₄O₁₁
Na	ⓘ Katophorite	{Na}{CaNa}{Mg₄Al}[(AlSi₇)O₂₂](OH)₂
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
Mg	ⓘ Iddingsite	MgO · Fe₂O₃ · 3SiO₂ · 4H₂O
Mg	ⓘ Katophorite	{Na}{CaNa}{Mg₄Al}[(AlSi₇)O₂₂](OH)₂
Al	Aluminium
Al	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Al	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
Al	ⓘ Kalsilite	KAlSiO₄
Al	ⓘ Microcline	K(AlSi₃O₈)
Al	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Al	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Al	ⓘ Sanidine	K(AlSi₃O₈)
Al	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Al	ⓘ Katophorite	{Na}{CaNa}{Mg₄Al}[(AlSi₇)O₂₂](OH)₂
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Aegirine	NaFe³⁺Si₂O₆
Si	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Si	ⓘ Aenigmatite	Na₄[Fe₁₀²⁺Ti₂]O₄[Si₁₂O₃₆]
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Si	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Si	ⓘ Arfvedsonite	[Na][Na₂][Fe₄²⁺Fe³⁺]Si₈O₂₂(OH)₂
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Dalyite	K₂ZrSi₆O₁₅
Si	ⓘ Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
Si	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
Si	ⓘ Kalsilite	KAlSiO₄
Si	ⓘ Microcline	K(AlSi₃O₈)
Si	ⓘ Narsarsukite	Na₄(Ti,Fe)₂[Si₈O₂₀](O,OH,F)₂
Si	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Si	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Si	ⓘ Quartz	SiO₂
Si	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
Si	ⓘ Sanidine	K(AlSi₃O₈)
Si	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Vlasovite	Na₂ZrSi₄O₁₁
Si	ⓘ Zircon	Zr(SiO₄)
Si	ⓘ Iddingsite	MgO · Fe₂O₃ · 3SiO₂ · 4H₂O
Si	ⓘ Katophorite	{Na}{CaNa}{Mg₄Al}[(AlSi₇)O₂₂](OH)₂
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
P	Phosphorus
P	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
S	Sulfur
S	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
S	ⓘ Pyrite	FeS₂
Cl	Chlorine
Cl	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Cl	ⓘ Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
Cl	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Cl	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Dalyite	K₂ZrSi₆O₁₅
K	ⓘ Kalsilite	KAlSiO₄
K	ⓘ Microcline	K(AlSi₃O₈)
K	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
K	ⓘ Sanidine	K(AlSi₃O₈)
Ca	Calcium
Ca	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
Ca	ⓘ Fluorite	CaF₂
Ca	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
Ca	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Katophorite	{Na}{CaNa}{Mg₄Al}[(AlSi₇)O₂₂](OH)₂
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ca	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Ti	Titanium
Ti	ⓘ Aenigmatite	Na₄[Fe₁₀²⁺Ti₂]O₄[Si₁₂O₃₆]
Ti	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Narsarsukite	Na₄(Ti,Fe)₂[Si₈O₂₀](O,OH,F)₂
Ti	ⓘ Titanite	CaTi(SiO₄)O
Fe	Iron
Fe	ⓘ Aegirine	NaFe³⁺Si₂O₆
Fe	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Fe	ⓘ Aenigmatite	Na₄[Fe₁₀²⁺Ti₂]O₄[Si₁₂O₃₆]
Fe	ⓘ Arfvedsonite	[Na][Na₂][Fe₄²⁺Fe³⁺]Si₈O₂₂(OH)₂
Fe	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Narsarsukite	Na₄(Ti,Fe)₂[Si₈O₂₀](O,OH,F)₂
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Iddingsite	MgO · Fe₂O₃ · 3SiO₂ · 4H₂O
Zr	Zirconium
Zr	ⓘ Dalyite	K₂ZrSi₆O₁₅
Zr	ⓘ Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
Zr	ⓘ Vlasovite	Na₂ZrSi₄O₁₁
Zr	ⓘ Zircon	Zr(SiO₄)
Nb	Niobium
Nb	ⓘ Pyrochlore Group	A₂Nb₂(O,OH)₆Z

Geochronology

Mineralization age: Mesozoic : 206.07 ± 2.63 Ma to 170.93 ± 1.67 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

ⓘ Nepheline-syenite (youngest age)

170.93 ± 1.67 Ma

Early Jurassic

ⓘ Alkali Feldspar (youngest age)	178 Ma
ⓘ Alkali Feldspar (oldest age)	180 Ma

Triassic

Late/Upper Triassic

ⓘ Nepheline-syenite (oldest age)

206.07 ± 2.63 Ma

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Straumsvola_Mountain
Wikidata ID:	Q7622316

Other Regions, Features and Areas containing this locality

Antarctic MeteoritesGroup of Meteorite Fall Locations

Antarctic PlateTectonic Plate

Antarctica

Transantarctic MountainsMountain Range

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

Ravich, M.G., Solov'yev, D.S. [Равич М.Г., Соловьев Д.С.] (1966) Geology and petrology of the central part of the mountains of Dronning Maud Land (Eastern Antarctica) [Геология и петрология центральной части гор Земли Королевы Мод (Восточная Антарктида)]. Nedra, Leningrad, 290 pages (in Russian).

Ravich, M.G., Solov'yev, D.S. (1969) Geology and petrology of the mountains of central Dronning Maud Land (Eastern Antarctica). Israel Program for Scientific Translations, Jerusalem, 348 pages (Translated from the 1966 Russian publication).

Hjelle A. (1972) Some observations on the geology of H. U. Sverdrupfjella, Dronning Maud Land. Norsk Polarinstitutt, Årbok 1972, 7-22.

Allen, A.R., Grantham, G.H., Groenewald, P.B., Hunter, D.R. (1986) Tectonic and metamorphic evolution of H.U. Sverdrupfjella, western Dronning Maud Land, Antarctica - a preliminary review. Geocongress 1986 (Johannesburg), extended abstr., 707-710.

Harris, C., Rickard, R.S. (1987) Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola, Dronning Maud Land, Antarctica. Canadian Mineralogist, 25, 755-762.

Harris, C., Grantham, G.H. (1993) Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130(4), 513-532.

Curtis, M.L., Riley, T.R., Owens, W.H., Leat, P.T., Duncan, R.A. (2008) The form, distribution and anisotropy of magnetic susceptibility of Jurassic dykes in H.U. Sverdrupfjella, Dronning Maud Land, Antarctica. Implications for dyke swarm emplacement. Journal of Structural Geology, 30, 1429-1447.

Riley, T.R., Curtis, M.L., Leat, P.T., Millar, I.L. (2009) The geochemistry of Middle Jurassic dykes associated with the Straumsvola-Tvora alkaline plutons, Dronning Maud Land, Antarctica and their association with the Karoo large igneous province. Mineralogical Magazine, 73(2), 205-226.

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Straumsvola complex, Queen Maud Land, Eastern Antarctica, Antarctica i
Regional Level Types
Straumsvola complex Complex
Queen Maud Land Region
Eastern Antarctica Region
Antarctica Continent