One of the biggest Nb-Ta pegmatites in the Tantalite Valley area. Exposed in the walls of a deep ravine near the boundary between farms Umeis and Kinderzitt. It is a tabular body striking N 42° W, dips 27°SW and is intrusive into a mafic-ultamafic plug being enclosed in amphibolite, diorite and biotite. It is more than 330 m in length.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

5 valid minerals.

Rock Types Recorded

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Alphabetical List Tree Diagram

ⓘ 'Pegmatite'

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

von Bezing, Ludi (2007) Namibia - Minerals and Localities (1st ed.). Bode Verlag GmbH.

ⓘ Albite var. Cleavelandite

Formula: Na(AlSi₃O₈)

References:

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

ⓘ Bavenite

Formula: Ca₄Be₂Al₂Si₉O₂₆(OH)₂

References:

von Bezing, Ludi (2007) Namibia - Minerals and Localities (1st ed.). Bode Verlag GmbH.

ⓘ 'Feldspar Group'

References:

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

ⓘ 'Feldspar Group var. Perthite'

References:

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

ⓘ 'Garnet Group'

Formula: X₃Z₂(SiO₄)₃

References:

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

ⓘ 'Lepidolite'

References:

Baldwin, Joy R. (1989) Replacement phenomena in tantalum minerals from rare-metal pegmatites in South Africa and Namibia. Mineralogical Magazine, 53 (373) 571-581 doi:10.1180/minmag.1989.053.373.08

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

ⓘ 'Mica Group'

References:

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

ⓘ Microcline

Formula: K(AlSi₃O₈)

References:

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

ⓘ 'Microlite Group'

Formula: A_2-mTa₂X_6-wZ_1-n

Description: Uranoan microlite, as isolated crystals in lepidolite

References:

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

ⓘ Moraesite

Formula: Be₂(PO₄)(OH) · 4H₂O

References:

von Bezing, Ludi (2007) Namibia - Minerals and Localities (1st ed.). Bode Verlag GmbH.

ⓘ Quartz

Formula: SiO₂

References:

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

ⓘ 'Tourmaline'

Formula: AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z

References:

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	'Microlite Group'	4.00.	A_2-mTa₂X_6-wZ_1-n
ⓘ	Quartz	4.DA.05	SiO₂
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Moraesite	8.DA.05	Be₂(PO₄)(OH) · 4H₂O
Group 9 - Silicates
ⓘ	Bavenite	9.DF.25	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
ⓘ	Microcline	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	var. Cleavelandite	9.FA.35	Na(AlSi₃O₈)
Unclassified
ⓘ	'Feldspar Group'	-
ⓘ	'Lepidolite'	-
ⓘ	'Tourmaline'	-	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
ⓘ	'Feldspar Group var. Perthite'	-
ⓘ	'Mica Group'	-
ⓘ	'Garnet Group'	-	X₃Z₂(SiO₄)₃

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
H	ⓘ Moraesite	Be₂(PO₄)(OH) · 4H₂O
Be	Beryllium
Be	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
Be	ⓘ Moraesite	Be₂(PO₄)(OH) · 4H₂O
B	Boron
B	ⓘ Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
O	Oxygen
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Moraesite	Be₂(PO₄)(OH) · 4H₂O
O	ⓘ Quartz	SiO₂
O	ⓘ Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
O	ⓘ Albite var. Cleavelandite	Na(AlSi₃O₈)
O	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Albite var. Cleavelandite	Na(AlSi₃O₈)
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
Al	ⓘ Microcline	K(AlSi₃O₈)
Al	ⓘ Albite var. Cleavelandite	Na(AlSi₃O₈)
Si	Silicon
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
Si	ⓘ Microcline	K(AlSi₃O₈)
Si	ⓘ Quartz	SiO₂
Si	ⓘ Albite var. Cleavelandite	Na(AlSi₃O₈)
Si	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
P	Phosphorus
P	ⓘ Moraesite	Be₂(PO₄)(OH) · 4H₂O
K	Potassium
K	ⓘ Microcline	K(AlSi₃O₈)
Ca	Calcium
Ca	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
Ta	Tantalum
Ta	ⓘ Microlite Group	A_2-mTa₂X_6-wZ_1-n

Other Regions, Features and Areas containing this locality

AfricaContinent

African PlateTectonic Plate

Namaqua-Natal BeltOrogenic Belt

Southern Africa

Orange River Pegmatite BeltPegmatite Field

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References

Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.

von Bezing, Ludi (2007) Namibia - Minerals and Localities (1st ed.). Bode Verlag GmbH.p.384

www.minersoc.org (n.d.) http://www.minersoc.org/pages/Archive-MM/Volume_53/53-373-571.pdf

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