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Magganasite

A valid IMA mineral species
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Formula:
CuFe3+3O(AsO4)3
Colour:
golden- or red-brown to brownish-yellow, brown or reddish-brown
Lustre:
Vitreous, Sub-Metallic
Specific Gravity:
4.708 (Calculated)
Crystal System:
Triclinic
Name:
It is named in honour of the Greek mineralogist and petrologist Prof. Dr. Andreas Magganas (born 1954), Professor of Mineralogy, Petrology and Mineral Chemistry in National and Kapodistrian University of Athens, Greece, a specialist in volcanology and the mineralogy of volcanic fumaroles.
New structure type. Chemically most similar to auriacusite (that is also anhydrous).


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Unique IdentifiersHide

Mindat ID:
55974
Long-form identifier:
mindat:1:1:55974:2

Similar NamesHide

MagnesiteA valid IMA mineral species - grandfatheredMgCO3

IMA Classification of MagganasiteHide

Classification of MagganasiteHide

Strunz-mindat (2026):
8.BN.

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
MggIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of MagganasiteHide

Lustre:
Vitreous, Sub-Metallic
Transparency:
Translucent
Colour:
Golden- or red-brown to brownish-yellow, brown or reddish-brown
Streak:
Yellow
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
none
Fracture:
Irregular/Uneven
Density:
4.708 g/cm3 (Calculated)

Optical Data of MagganasiteHide

Anisotropism:
weak
Bireflectance:
Bireflectance is very weak
Reflectivity:
WavelengthR1 (%)R2 (%)
470nm13.1%13.1%
546nm12.5%11.9%
589nm12.2%11.9%
650nm11.9%11.8%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 13.1%.
R1 shown in black, R2 shown in red
Colour in reflected light:
gray
Internal Reflections:
none
Pleochroism:
Non-pleochroic

Chemistry of MagganasiteHide

Mindat Formula:
CuFe3+3O(AsO4)3
Element Weights:
Element% weight
As33.858 %
O31.332 %
Fe25.237 %
Cu9.573 %

Calculated from ideal end-member formula.
Elements listed:
As, Cu, Fe, O - search for minerals with similar chemistry

Crystallography of MagganasiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.1813(7) Å, b = 9.6427(11) Å, c = 9.6834(11) Å
α = 82.07(1)°, β = 78.68(1)°, γ = 79.96(1)°
Ratio:
a:b:c = 0.537 : 1 : 1.004
Unit Cell V:
464.42 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Type Occurrence of MagganasiteHide

Type Locality:
ⓘ Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
General Appearance of Type Material:
prismatic crystals up to 0.2 mm long and up to 0.04 mm thick typically assembled in clusters up to 1 mm across.
Place of Conservation of Type Material:
collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5799/1
Geological Setting of Type Material:
Magganasite was found in the material collected from hot fumerole (the temperature measured during sampling varied from 350 to 400°C) pockets situated 1–1.5 m below the day surface.
Associated Minerals at Type Locality:
AlarsiteCalciojohilleriteCassiteriteEuchlorineFedotovite
HematiteJohilleriteLammeriteLangbeiniteParalammerite
SanidineTenoriteWulffite
Reference:
Pekov, Igor V.; Zubkova, Natalia V.; Agakhanov, Atali A.; Koshlyakova, Natalia N.; Chukanov, Nikita V.; Yapaskurt, Vasiliy O.; Britvin, Sergey N.; Turchkova, Anna G.; Zhitova, Elena S.; Pushcharovsky, Dmitry Yu. (2026) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. XXI. Magganasite, CuFe3+3O(AsO4)3. Mineralogical Magazine, 90 (2). p.472-480. doi:10.1180/mgm.2025.10141

Synonyms of MagganasiteHide

Other Language Names for MagganasiteHide

Related Minerals - Strunz-mindat GroupingHide

8.BN.FluoralforsiteBa5(PO4)3FHex. 6/m : P6/m
8.BN.AraditeBaCa6[(SiO4)(VO4)](VO4)2FTrig. 3m : R3m
8.BN.FluorpyromorphitePb5(PO4)3FHex. 6/m : P63/m
8.BN.FluorsigaiiteCa2Sr3(PO4)3FHex. 6/m : P63/m
8.BN.05PieczkaiteMn5(PO4)3ClHex. 6/m : P63/m
8.BN.05FluorapatiteCa5(PO4)3FHex. 6/m : P63/m
8.BN.05FluorcaphiteSrCaCa3(PO4)3FHex. 6/m : P63/m
8.BN.05VanadinitePb5(VO4)3ClHex. 6/m : P63/m
8.BN.05HedyphaneCa2Pb3(AsO4)3ClHex. 6/mmm(6/m2/m2/m) : P63/mmc
8.BN.05HydroxylhedyphaneCa2Pb3(AsO4)3(OH)Trig. 3 : P3
8.BN.05'Mimetite-M'Pb5(AsO4)3ClMon. 2/m : P21/b
8.BN.05JohnbaumiteCa5(AsO4)3(OH)Hex. 6/m : P63/m
8.BN.05PliniusiteCa5(VO4)3FHex. 6/m : P63/m
8.BN.05'Hydroxylapatite-M'Ca5(PO4)3OHMon. 2/m : P21/b
8.BN.05HydroxylpyromorphitePb5(PO4)3(OH)Hex. 6/mmm(6/m2/m2/m) : P63/mcm
8.BN.05Miyahisaite(Sr,Ca)2Ba3(PO4)3F Hex. 6/m : P63/m
8.BN.05Carlgieseckeite-(Nd)NaNdCa3(PO4)3FTrig. 3 : P3
8.BN.05Belovite-(Ce)NaCeSr3(PO4)3FTrig. 3 : P3
8.BN.05Kuannersuite-(Ce)NaCeBa3(PO4)3F0.5Cl0.5Trig. 3 : P3
8.BN.05AlforsiteBa5(PO4)3ClHex. 6/m : P63/m
8.BN.05'Unnamed (OH-analogue of Mimetite)'Pb5(AsO4)3(OH)Hex. 6/m : P63/m
8.BN.05StronadelphiteSr5(PO4)3FHex. 6/m : P63/m
8.BN.05ParafiniukiteCa2Mn3(PO4)3ClHex. 6/m : P63/m
8.BN.05MimetitePb5(AsO4)3ClHex. 6/m : P63/m
8.BN.05 va'Germanate-pyromorphite'Pb5(PO4)2GeO4
8.BN.05Belovite-(La)NaLaSr3(PO4)3FTrig. 3 : P3
8.BN.05FluorphosphohedyphaneCa2Pb3(PO4)3FHex. 6/m : P63/m
8.BN.05FluorstrophiteSrCaSr3(PO4)3FHex. 6/m : P63/m
8.BN.05HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m : P63/m
8.BN.05'Johnbaumite-M'Ca5(AsO4)3OHMon. 2/m : P21/m
8.BN.05PhosphohedyphaneCa2Pb3(PO4)3ClHex. 6/m : P63/m
8.BN.05TurneaureiteCa5(AsO4)3ClHex. 6/m : P63/m
8.BN.05MorelanditeCa2Ba3(AsO4)3ClHex.
8.BN.05'Oxypyromorphite'Pb10(PO4)6O
8.BN.05Deloneite(Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5Trig. 3 : P3
8.BN.05ChlorapatiteCa5(PO4)3ClHex. 6/m : P63/m
8.BN.05PyromorphitePb5(PO4)3ClHex. 6/m : P63/m
8.BN.05VanackeritePb4Cd(AsO4)3ClTrig. 3 : P3
8.BN.05SvabiteCa5(AsO4)3FHex. 6/mmm(6/m2/m2/m) : P63/mmc
8.BN.10ArctiteNa2Ca4(PO4)3FTrig. 3m(32/m) : R3m
8.BN.10KrügeriteBaCa6(SiO4)2[(P0.5S0.5)O4]2FTrig. 3m(32/m) : R3m
8.BN.15GoryainoviteCa2(PO4)ClOrth. mmm(2/m2/m2/m) : Pbcm

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for MagganasiteHide

References for MagganasiteHide

Localities for MagganasiteHide

Showing 1 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Kamchatka Krai
    • Milkovsky District
      • Tolbachik Volcanic field
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
            • Second scoria cone
doi.org (n.d.) +2 other references
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