Locality type:

Quarry

Classification

Species:

Manganoneptunite

Formula:

KNa₂Li(Mn²⁺)₂Ti₂[Si₄O₁₂]₂

Comments:

Convincing chemical-analytical details are apparently missing.
Note that most (or all?) "manganoneptunite" from Aris is in fact neptunite (Blass, G. & Tremmel, G. (2014): Neptunit und weitere neue Mineralien aus den Phonolith-Steinbrüchen von Aris, Windhoek. Mineralien-Welt 25 (1), 76-83 (in German).).

see for more information https://www.mindat.org/mesg-589160.html

Confirmation

Validity:

Unconfirmed/Questioned

Associated Minerals Based on Photo Data:

Fluorapophyllite-(K)

ⓘ1 photo of Manganoneptunite associated with Fluorapophyllite-(K) at this locality.

Natrolite

ⓘ1 photo of Manganoneptunite associated with Natrolite at this locality.

Data

Mineral Data:

Click here to view Manganoneptunite data

Locality Data:

Click here to view Aris Quarries, Aris, Windhoek Rural, Khomas Region, Namibia

Photo Gallery

View Gallery (3 photos)

Data Identifiers

Mindat Occurrence Record ID:

43605

Long-form Identifier:

1:3:43605:6

GUID (UUID V4):

4f8e4ce2-b938-4755-b7d2-4c9e49770242

References

Uwe Kolitsch (single-crystal X-ray diffraction + SEM-EDS)

[http://www.koeln.netsurf.de/~w.steffens/aris.htm]

Wartha, R., Palfi, A., Niedermayr, G., Brandstätter, F. and Petersen, O. V. (2001): Der Aris-Phonolith-Komplex und seine Mineralien. In Bahmann, U. and A. (Eds.), Namibia – Zauberwelt edler Steine und Kristalle, Bode-Verlag, Haltern, Germany, pp. 172-179. (in German)

Rocks & Min. (2007) 82: 243-244

Yakovenchuk, V. N., Ivanyuk, G. Y., Pakhomovsky, Y. A., Selivanova, E. A., Mikhailova, J. A., Krivovichev, S. V., Zolotarev, A. A., Zalkind, O. A. (2011) Ellingsenite, Na₅Ca₆Si₁₈O₃₈(OH)₁₃·6H₂O, a new martinite-related mineral species from phonolite of the Aris alkaline complex, Namibia. The Canadian Mineralogist, 49 (5) 1165-1173 doi:10.3749/canmin.49.5.1165

Blass, G., Tremmel, G. (2014) Neptunit und weitere neue Mineralien aus den Phonolith-Steinbrüchen von Aris, Windhoek. Mineralien Welt, 25 (1) 76-83

Koller F, Skoda R, Palfi A, Popp F, Jost B (2014) Paleogene phonolites of the Aris, Staalhart and Klinghardt groups, central and south Namibia, Africa. 21 st meeting of the International Mineralogical Association. p 194

Reference Search (possible matching items)

	Piilonen, P. C., McDonald, A. M., Grice, J. D., Rowe, R., Gault, R. A., Poirier, G., Cooper, M. A., Kolitsch, U., Roberts, A. C., Lechner, W., Palfi, A. G. (2010) Arisite-(Ce), a new rare-earth fluorocarbonate from the Aris phonolite, Namibia, Mont Saint-Hilaire and the Saint-Amable sill, Quebec, Canada. The Canadian Mineralogist, 48 (3) 661-671 doi:10.3749/canmin.48.3.661	Journal (article/letter/editorial)
	NEW RARE-EARTH FLUORCARBONATE FROM THE ARIS PHONOLITE, NAMIBIA, MONT SAINT-HILAIRE AND THE SAINT-AMABLE...4L4, Canada Andreas G. PALFI PO Box 23532, Windhoek, Namibia Abstract Arisite-(Ce), ideally NaCe2(CO3)2[(CO3)1–xF2x]F...rare-earth fluorcarbonate mineral from the Aris phonolite (Namibia), Mont Saint-Hilaire (Quebec), and the...the Saint-Amable sill (Quebec). At the Aris phonolite, arisite-(Ce) occurs as vitreous, transparent, beige...iodide. Its density Dcalc is 4.126 g/cm3 for Z = 1 (Aris). Arisite-(Ce) is uniaxial negative, has a sharp
	Piilonen, P. C., McDonald, A. M., Grice, J. D., Cooper, M. A., Kolitsch, U., Rowe, R., Gault, R. A., Poirier, G. (2010) Arisite-(La), a new REE-fluorcarbonate mineral from the Aris phonolite (Namibia), with descriptions of the crystal structures of arisite-(La) and arisite-(Ce) Mineralogical Magazine, 74 (2) 257-268 doi:10.1180/minmag.2010.074.2.257	Journal (article/letter/editorial)
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Manganoneptunite from Aris Quarries, Aris, Windhoek Rural, Khomas Region, Namibia

Manganoneptunite from
Aris Quarries, Aris, Windhoek Rural, Khomas Region, Namibia