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EPR 12° 50' N, East Pacific Rise, Pacific Ocean

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East Pacific Rise axis, near 12° 50' N.
Deep-seated opx doleritic gabbro xenoliths within ocean floor tholeiites (pillows).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


5 valid minerals.

Detailed Mineral List:

Anorthite
Formula: Ca(Al2Si2O8)
Description: - Glassy margin of pillows.
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
Anorthite var: Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Description: - Glassy margin of pillows.
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Description: Ca-rich augite. - Glassy margin of pillows. - Xenolithic inner zone of pillows.
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
'Clinopyroxene Subgroup'
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
Enstatite
Formula: MgSiO3
Description: - Xenolithic inner zone of pillows.
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
Forsterite
Formula: Mg2SiO4
Description: - Glassy margin of pillows. - Intermediate microlitic zone. - Xenolithic inner zone of pillows.
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
'Glass'
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
Hercynite
Formula: Fe2+Al2O4
Description: - Xenolithic inner zone of pillows.
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
Hercynite var: Picotite
Formula: (Fe,Mg)(Al,Cr)2O4
Description: - Xenolithic inner zone of pillows.
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
'Labradorite'
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Description: - Glassy margin of pillows. - Xenolithic inner zone of pillows.
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
'Orthopyroxene Subgroup'
Reference: R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Hercynite4.BB.05Fe2+Al2O4
var: Picotite4.BB.05(Fe,Mg)(Al,Cr)2O4
Group 9 - Silicates
'Anorthite'9.FA.35Ca(Al2Si2O8)
var: Bytownite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
'Augite'9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Enstatite9.DA.05MgSiO3
Forsterite9.AC.05Mg2SiO4
Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Unclassified Minerals, Rocks, etc.
Clinopyroxene Subgroup-
Glass-
Orthopyroxene Subgroup-

List of minerals arranged by Dana 8th Edition classification

Group 7 - MULTIPLE OXIDES
AB2X4
Hercynite7.2.1.3Fe2+Al2O4
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Enstatite65.1.2.1MgSiO3
Unclassified Minerals, Rocks, etc.
Anorthite-Ca(Al2Si2O8)
var: Bytownite-(Ca,Na)[Al(Al,Si)Si2O8]
'Clinopyroxene Subgroup'-
'Glass'-
Hercynite
var: Picotite
-(Fe,Mg)(Al,Cr)2O4
'Labradorite'-(Ca,Na)[Al(Al,Si)Si2O8]
'Orthopyroxene Subgroup'-

List of minerals for each chemical element

OOxygen
O AnorthiteCa(Al2Si2O8)
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
O EnstatiteMgSiO3
O ForsteriteMg2SiO4
O HercyniteFe2+Al2O4
O Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
O Hercynite (var: Picotite)(Fe,Mg)(Al,Cr)2O4
NaSodium
Na Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Na Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg EnstatiteMgSiO3
Mg ForsteriteMg2SiO4
Mg Hercynite (var: Picotite)(Fe,Mg)(Al,Cr)2O4
AlAluminium
Al AnorthiteCa(Al2Si2O8)
Al Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Al HercyniteFe2+Al2O4
Al Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Al Hercynite (var: Picotite)(Fe,Mg)(Al,Cr)2O4
SiSilicon
Si AnorthiteCa(Al2Si2O8)
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Si EnstatiteMgSiO3
Si ForsteriteMg2SiO4
Si Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
CaCalcium
Ca AnorthiteCa(Al2Si2O8)
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Ca Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
CrChromium
Cr Hercynite (var: Picotite)(Fe,Mg)(Al,Cr)2O4
FeIron
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe HercyniteFe2+Al2O4
Fe Hercynite (var: Picotite)(Fe,Mg)(Al,Cr)2O4

References

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R. Hekinian et al. (1985), Bull. Minéral. 108: 691-698.


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