Manganvesuvianite

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title: "Manganvesuvianite" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["tetragonal-minerals", "minerals-in-space-group-85", "calcium-minerals", "manganese(ii,iii)-minerals", "aluminium-minerals", "iron(iii)-minerals", "magnesium-minerals", "sorosilicates", "hydroxide-minerals"] topic_path: "general/tetragonal-minerals" source: "https://en.wikipedia.org/wiki/Manganvesuvianite" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::data[format=table title="Infobox mineral"]

Field	Value
name	Manganvesuvianite
category	Sorosilicates
image	Manganvesuvianite-122296.jpg
caption	Manganvesuvianite from Wessels Mine, Northern Cape Province, South Africa (4.2 x 3.9 x 3.3 cm)
formula
IMAsymbol	Mnves
strunz	9.BG.35
dana	58.02.04.04
system	Tetragonal
class	Dipyramidal (4/m)
(same H-M symbol)
symmetry	P4/n
unit cell	a = 15.575 Å, c = 11.824 Å, Z = 2
color	Deep red-brown, red, nearly black
cleavage	None observed
fracture	Conchoidal
mohs	6 to 7
luster	Vitreous
refractive	nω = 1.735, nε = 1.724
opticalprop	Uniaxial (-)
birefringence	δ = 0.012
pleochroism	Strong
streak	White
diaphaneity	Transparent, translucent, opaque
references
::

| name = Manganvesuvianite | category = Sorosilicates | boxwidth = | boxbgcolor = | image = Manganvesuvianite-122296.jpg | imagesize = | caption = Manganvesuvianite from Wessels Mine, Northern Cape Province, South Africa (4.2 x 3.9 x 3.3 cm) | formula = | IMAsymbol = Mnves | molweight = | strunz = 9.BG.35 | dana = 58.02.04.04 | system = Tetragonal | class = Dipyramidal (4/m) (same H-M symbol) | symmetry = P4/n | unit cell = a = 15.575 Å, c = 11.824 Å, Z = 2 | color = Deep red-brown, red, nearly black | habit = | twinning = | cleavage = None observed | fracture = Conchoidal | tenacity = | mohs = 6 to 7 | luster = Vitreous | polish = | refractive = nω = 1.735, nε = 1.724 | opticalprop = Uniaxial (-) | birefringence = δ = 0.012 | 2V = | dispersion = | pleochroism = Strong | fluorescence= | absorption = | streak = White | gravity = | density = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Transparent, translucent, opaque | other = | references = Manganvesuvianite is a rare mineral with formula . The mineral is red to nearly black in color. Discovered in South Africa and described in 2002, it was so named for the prevalence of manganese in its composition and its relation to vesuvianite.

Occurrence and formation

Manganvesuvianite crystals occur as long prisms up to 1.5 cm. Small crystals are transparent and red to lilac in color; large crystals are opaque and nearly black in color with dark-red internal reflections. Strongly zoned crystals less than 0.2 mm in size constitute rock-forming manganvesuvianite.

, manganvesuvianite has been found at two locations in South Africa.

Manganvesuvianite is a member of the vesuvianite group and is the manganese analogue of vesuvianite.

History

In 1883, Arnold von Lasaulx made the first detailed description of vesuvianite containing up to 3.2 wt% MnO from Lower Silesia in Poland. Studies in the 1980s and 1990s revealed that the vesuvianite group was more complex than previously assumed, necessitating the definition of new minerals. Manganvesuvianite proper was discovered in the Wessels () and N'Chwaning (shaft II; ) mines of the Kalahari manganese fields The type specimen from the N'Chwaning II Mine is held at the Natural History Museum of Bern in Switzerland.

References

;Bibliography

References

1. Warr, L.N.. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine.
2. "Manganvesuvianite". Webmineral.
3. "Manganvesuvianite". Mindat.
4. Armbruster 2002, p. 138.
5. Armbruster 2002, pp. 138–9.
6. Armbruster 2002, p. 139.
7. It formed at temperatures of {{convert. 250. to. 400. C. F by the [[hydrothermal alteration]] of sedimentary and metamorphic manganese ores. Crystallization occurred in [[Fault (geology). fault]] planes and [[Lenticular (geology). lenticular]] bodies in the ore bed or by filling [[Vein (geology)
8. Armbruster 2000, p. 571.
9. In 2000, vesuvianite was found containing up to 14.3 wt% MnO from the Kalahari manganese fields of [[Northern Cape Province]], South Africa.Armbruster 2000, p. 570.
10. Armbruster 2002, p. 140.

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