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Hoffnungsstrahl pegmatite, Rössing Mountains Area, Arandis, Erongo Region, Namibia

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude: 22° South , 14° East (est.)
Margin of Error:~163km
Locality type:Pegmatite


"Type locality" of Heliodor. Located in the 726 m high mountain, eastern slopes, 4km north of the Rössing station.
The occurrence consists of emplaced pegmatites of an area 600 x 350 m. Heliodor was not found in the adjacent pegmatite.

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Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Beryl
Formula: Be3Al2(Si6O18)
Description: Originally discovered in this pegmatite in 1910. Heliodor from this pegmatite is noted to show cathode luminescence caused by traces of uranium.
Reference: Jahn, Steffen (2001): Goldberyll (Heliodor) vom Hoffnungsstrahl-Pegmatite bei Rössing. in Jahn et al (eds): Namibia. Zauberwelt edler Steine und Kristalle. Bode Verlag. 2001, p 119; Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa: 51; Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);
Beryl var: Heliodor
Formula: Be3Al2(Si6O18)
Description: Originally discovered in this pegmatite in 1910. Heliodor from this pegmatite is noted to show cathode luminescence caused by traces of uranium.
Reference: Jahn, Steffen (2001): Goldberyll (Heliodor) vom Hoffnungsstrahl-Pegmatite bei Rössing. in Jahn et al (eds): Namibia. Zauberwelt edler Steine und Kristalle. Bode Verlag. 2001, p 119; Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa: 51; Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);
'Columbite-Tantalite'
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);
'Feldspar Group'
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);
Fluorite
Formula: CaF2
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);
'Pegmatite'
Reference: Automatically generated from locality name
Pyrite
Formula: FeS2
Description: Found in a single sulphide nodule.
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);
Quartz
Formula: SiO2
Reference: Jahn, Steffen (2001): Goldberyll (Heliodor) vom Hoffnungsstrahl-Pegmatite bei Rössing. in Jahn et al (eds): Namibia. Zauberwelt edler Steine und Kristalle. Bode Verlag. 2001, p 119
Quartz var: Rose Quartz
Formula: SiO2
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English);

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 3 - Halides
'Fluorite'3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Rose Quartz4.DA.05SiO2
Group 9 - Silicates
'Beryl'9.CJ.05Be3Al2(Si6O18)
var: Heliodor9.CJ.05Be3Al2(Si6O18)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Topaz9.AF.35Al2(SiO4)(F,OH)2
Unclassified Minerals, Rocks, etc.
'Columbite-Tantalite'-
'Feldspar Group'-
Pegmatite-
Wolframite-(Fe2+)WO4 to (Mn2+)WO4

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz52.3.1.1Al2(SiO4)(F,OH)2
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
Beryl
var: Heliodor
-Be3Al2(Si6O18)
'Columbite-Tantalite'-
'Feldspar Group'-
'Pegmatite'-
Quartz
var: Rose Quartz
-SiO2
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4

List of minerals for each chemical element

HHydrogen
H MuscoviteKAl2(AlSi3O10)(OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H TopazAl2(SiO4)(F,OH)2
BeBeryllium
Be BerylBe3Al2(Si6O18)
Be Beryl (var: Heliodor)Be3Al2(Si6O18)
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O BerylBe3Al2(Si6O18)
O Beryl (var: Heliodor)Be3Al2(Si6O18)
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O Quartz (var: Rose Quartz)SiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O TopazAl2(SiO4)(F,OH)2
O Wolframite(Fe2+)WO4 to (Mn2+)WO4
FFluorine
F FluoriteCaF2
F TopazAl2(SiO4)(F,OH)2
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al BerylBe3Al2(Si6O18)
Al Beryl (var: Heliodor)Be3Al2(Si6O18)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al TopazAl2(SiO4)(F,OH)2
SiSilicon
Si BerylBe3Al2(Si6O18)
Si Beryl (var: Heliodor)Be3Al2(Si6O18)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si Quartz (var: Rose Quartz)SiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si TopazAl2(SiO4)(F,OH)2
SSulfur
S PyriteFeS2
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca FluoriteCaF2
MnManganese
Mn Wolframite(Fe2+)WO4 to (Mn2+)WO4
FeIron
Fe PyriteFeS2
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Wolframite(Fe2+)WO4 to (Mn2+)WO4
WTungsten
W Wolframite(Fe2+)WO4 to (Mn2+)WO4

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Kaiser, E., (1912): Eine neues Beryll (Aquamarin)-Vorkommen in Deutsch-Südwestafrika. Centrbl. Mineral etc,: 385-390.
Jahn, Steffen et al. (2001): Goldberyll (Heliodor) vom Hoffnungsstrahl-Pegmatite bei Rössing, Namibia. Zauberwelt edler Steine und Kristalle. Bode Verlag: 119.
Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa: 51.
Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 335 pp (in English).


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