Reference: Lapido-Loureiro, F.E. 1967. Consideracoes sobre o quimismo dos sienitos nefelinicos. Breves referencias a rochas alcalinas de Angola e ao seu interesse economico. Boletim do Instituto de Investigacao Cientifica de Angola, 4, 37-65. Andrade, M.M. de 1957. Rochas vulcanicas da orla mesocenozoica entre Benguela e Mocamedes. Garcia de Orta. Revista da Junta de Investigacoes do Ultramar, 5, 739-768.

ⓘ Analcime

Formula: Na(AlSi₂O₆) · H₂O

ⓘ Anorthite

Formula: Ca(Al₂Si₂O₈)

ⓘ Anorthite var. Labradorite

Formula: (Ca,Na)[Al(Al,Si)Si₂O₈]

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

ⓘ 'Barkevikite'

ⓘ 'Fayalite-Forsterite Series'

ⓘ Nepheline

Formula: Na₃K(Al₄Si₄O₁₆)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘ	Aegirine-augite	9.DA.20	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆
ⓘ	Analcime	9.GB.05	Na(AlSi₂O₆) · H₂O
ⓘ	Anorthite	9.FA.35	Ca(Al₂Si₂O₈)
ⓘ	var. Labradorite	9.FA.35	(Ca,Na)[Al(Al,Si)Si₂O₈]
ⓘ	Augite	9.DA.15	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
ⓘ	Nepheline	9.FA.05	Na₃K(Al₄Si₄O₁₆)
Unclassified Minerals, Rocks, etc.
ⓘ	'Barkevikite'	-
ⓘ	'Fayalite-Forsterite Series'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	Oxygen
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Anorthite var. Labradorite	(Ca,Na)[Al(Al,Si)Si₂O₈]
O	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
O	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
O	ⓘ Anorthite	Ca(Al₂Si₂O₈)
Na	Sodium
Na	ⓘ Anorthite var. Labradorite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Na	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Na	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Na	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Mg	Magnesium
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Al	Aluminium
Al	ⓘ Anorthite var. Labradorite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Al	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Al	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Al	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Al	ⓘ Anorthite	Ca(Al₂Si₂O₈)
Si	Silicon
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Anorthite var. Labradorite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Si	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Si	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Si	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Si	ⓘ Anorthite	Ca(Al₂Si₂O₈)
K	Potassium
K	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Ca	Calcium
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Anorthite var. Labradorite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Ca	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Ca	ⓘ Anorthite	Ca(Al₂Si₂O₈)
Fe	Iron
Fe	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Fe	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)

de Andrade, M.M. (1957) Rochas vulcanicas da orla mesocenozoica entre Benguela e Mocamedes. Garcia de Orta. Revista da Junta de Investigacoes do Ultramar: 5: 739-768.

Lapido-Loureiro, F.E. (1967) Consideracoes sobre o quimismo dos sienitos nefelinicos. Breves referencias a rochas alcalinas de Angola e ao seu interesse economico. Boletim do Instituto de Investigacao Cientifica de Angola: 4: 37-65.

Woolley, A.R. (2001) Alkaline rocks and carbonatites of the world. Part 3: Africa. Geological Society. Natural History Museum, London: 19.

Other Regions, Features and Areas containing this locality

African PlateTectonic Plate

Kwanza basinBasin

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