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Joosteite from
Helikon II pegmatite, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia


Locality type:Pegmatite
Classification
Species:Joosteite
Formula:Mn2+(Mn3+,Fe3+)(PO4)O
Comments:Associated minerals are lithiophilite, sicklerite, eosphorite, amblygonite, varulite, dickinsonite, hureaulite, apatite and unidentified Fe/Mn oxides. The mineral has been formed by alteration processes at the expense of pegmatitic lithiophilite. Joosteite exhibits a black lustre and occurs as irregular small aggregates up to 3 mm in length.
Luminescent properties:none
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Rare
Confirmation
Validity:Confirmed
Confirmation Methods:EPMA
Associated Minerals:
Associates:Apatite
Dickinsonite-(KMnNa)
Eosphorite
Hureaulite
Lithiophilite
Sicklerite
Varulite
Data
Mineral Data:Click here to view Joosteite data
Locality Data:Click here to view Helikon II pegmatite, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia
Data Identifiers
Mindat Occurrence Record ID:358458
Long-form Identifier:1:3:358458:3
GUID (UUID V4):22ee7d8d-dcd2-4b97-a587-c567f1e66985
References
Reference Search (possible matching items)
Journal (article/letter/editorial)
Verlagsbuchhandlung 2007 Joosteite, Mn2 + (Mn3 + , Fe3 + )(PO4)O: a new phosphate mineral from the Helikon II Mine, Karibib...Karibib, Namibia Paul Keller, François Fontan, Francisco Velasco Roldan, and Philippe de Parseval With...With 1 figure and 4 tables Abstract: Joosteite, Mn2 + (Mn3 + , Fe3 + )(PO4)O, is a new mineral species...found in the granitic rare element pegmatite Helikon II, Karibib, Namibia. The new mineral is the Mn3 + -analogue...processes at the expense of pegmatitic lithiophilite. Joosteite exhibits a black lustre and occurs as irregular
Journal (article/letter/editorial)
The crystal structure of joosteite 225 N. Jb. Miner. Abh. 2007, Vol. 184/2, p. 225–230, Stuttgart,...structure of joosteite, (Mn2+,Mn3+,Fe3+)2[PO4]O, from the Helikon II Mine, Karibib (Namibia), and its relationship...structure of joosteite, (Mn2+,Mn3+,Fe3+)2[PO4]O, from the type locality Helikon II pegmatite, Karibib (Namibia)...R1 = 0.0414, R1<4σ = 0.0373, and wR2 = 0.0958. Joosteite is isostructural with staněkiteMabc, (Fe3+,Mn2+...the [PO4] tetrahedra. Synthetic polymorphs of joosteite or pure Mn2[PO4]O are unknown in contrast to staněkite-Mabc
Report (issue)
Mn2+Mn3+O(PO4) Joosteite Crystal Data: Monoclinic. Point Group: 2/m. As irregular aggregates to 3 mm...17(3)° Z = 8 X-ray Powder Pattern: Helikon II pegmatite, Karibib, Namibia. 2.819 (10), 3.077 (8), 3.209 (6)...32.14 32.12 35.74 . 100.00 (1) Helikon II pegmatite, Karibib, Namibia; by electron microprobe, corresponding...oxidized sicklerite in a granitic rare-element pegmatite. Association: Lithiophilite, sicklerite, eosphorite...oxides. Distribution: From the Helikon II pegmatite, Karibib, Namibia. Name: Honors Mrs. Charlotte Jooste
Journal (article/letter/editorial)
(648 nm). A brownish gray tarnish is observed after 72 h in air. The chemical composition, obtained by WDS...found by V.D. Dusmatov in 1976 in an alkaline pegmatite at the massif Dara-i-Pioz, Tajikistan. Surkhobite...daTa JoosTeiTe* P. Keller, F. Lissner, and T. Schleid (2007) The crystal structure of joosteite, (Mn2+...(Mn2+,Mn3+,Fe3+)2[PO4]O, from the Helikon II Mine, Karibib (Namibia), and its relationship to staněkite...fragment of joosteite (0.25 × 0.18 × 0.15 mm3) from the type locality Helikon II pegmatite, Karibib, Namibia
 
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