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Bosiite

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Ferdinando Bosi
Formula:
NaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3O
Colour:
Dark brown to black
Lustre:
Vitreous
Hardness:
7
Specific Gravity:
3.23
Crystal System:
Trigonal
Name:
Named by A. Ertl, I.A. Baksheev, G. Giester, C.L. Lengauer, V.Y. Prokofiev, and L.D. Zorina in 2015 in honor of Dr Ferdinando Bosi (1967-), researcher at the University of Rome La Sapienza, Italy, an expert in crystallography and mineralogy of tourmalines and spinels.
The Al (Z-site exchange) analogue of povondraite and Fe3+ (Y-site exchange) analogue of chromo-alumino-povondraite and vanadio-oxy-dravite. [6]Fe3+3[6]Al3 substitution describes its relation to oxy-dravite.


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Classification of BosiiteHide

Approved
Approval Year:
2015
First Published:
2016

Physical Properties of BosiiteHide

Vitreous
Colour:
Dark brown to black
Streak:
Pale brown
Hardness:
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
not present
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
3.23(3) g/cm3 (Measured)    3.26(1) g/cm3 (Calculated)
Comment:
measurement: pycnometry

Optical Data of BosiiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.760() nε = 1.687(5)
Max Birefringence:
δ = 0.073
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Visible
Comments:
yellow-brown (O), red-brown (E)

Chemical Properties of BosiiteHide

Formula:
NaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3O
Common Impurities:
Ca,Fe(II)

Crystallography of BosiiteHide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3m
Cell Parameters:
a = 16.101(3) Å, c = 7.327(2) Å
Ratio:
a:c = 1 : 0.455
Unit Cell V:
1645 ų
Z:
3

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.051(58)
4.648(28)
4.279(46)
4.025(57)
3.543(50)
3.008(58)
2.606(100)
2.068(45)
Comments:
From Type Description.

Type Occurrence of BosiiteHide

Place of Conservation of Type Material:
Type material is deposited in the collection of Naturhistorisches Museum Wien, Austria, catalogue number N 9793
Geological Setting of Type Material:
hydrothermal (within gold-bearing quartz-vein related to the Amudzhikan–Sretensky subvolcanic K-rich granodiorite-porphyry intrusion), first tourmaline generation at the site
Associated Minerals at Type Locality:

Synonyms of BosiiteHide

Other Language Names for BosiiteHide

German:Bosiit
Spanish:Bosiita

Relationship of Bosiite to other SpeciesHide

Other Members of this group:
AdachiiteCaFe3Al6(Si5AlO18)(BO3)3(OH)3(OH)Trig. 3m : R3m
Chromium-draviteNa(Mg3)Cr3+6(Si6O18)(BO3)3(OH)3(OH)Trig.
Chromo-alumino-povondraiteNa(Cr3)(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
DarrellhenryiteNa(LiAl2)Al6(BO3)3Si6O18(OH)3O Trig. 3m : R3m
DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
FeruviteCa(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
Fluor-buergeriteNa(Fe3+3)Al6(Si6O18)(BO3)3O3FTrig. 3m : R3m
Fluor-draviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-feruviteCa(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3F
Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-schorlNa(Fe2+3)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-tsilaisiteNa(Mn2+)3Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-uviteCa(Mg3)MgAl5(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Foitite(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OHTrig. 3m : R3m
LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
LucchesiiteCaFe2+3 Al6(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)Mon. m : Bm
Magnesio-foitite(□,Na)(Mg2Al)Al6(Si6O18)(BO3)3(OH)3(OH)Trig.
MaruyamaiteK(MgAl2)(Al5Mg)(BO3)3(Si6O18)(OH)3OTrig. 3m : R3m
OleniteNa(Al3)Al6(Si6O18)(BO3)3O3(OH)Trig.
Oxy-chromium-draviteNa(Cr)3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O Trig. 3m : R3m
Oxy-draviteNa(MgAl2)MgAl5(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Oxy-foitite□(Fe2+Al2)Al6(Si6O18)(BO3)3(OH)3OTrig. 3m (3 2/m) : R3m
Oxy-rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3O
Oxy-schorlNa(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Oxy-uviteCaMg3Al6(Si6O18)(BO3)3(OH)3O
Oxy-vanadium-draviteNa(V)3(V4Mg2)Si6O18(BO3)3(OH)3OTrig. 3m : R3m
PovondraiteNaFe3+3(Mg2Fe3+4)(Si6O18)(BO3)3(OH)3OTrig.
Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
SchorlNa(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
TsilaisiteNa(Mn2+)3Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
UM2000-64-SiO:BFeHKMgK, Mg, Fe, Si, B, O, H
Unnamed (Pb-dominant Tourmaline)(Pb,Na)(Li,Al)3Al6(Si6O18)(BO3)3(OH)3(F,OH)
Uvite SeriesCa(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(F/OH)Trig. 3m : R3m
Vanadio-oxy-chromium-draviteNa(V)3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O Trig. 3m : R3m
Vanadio-oxy-draviteNaV3(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m

Fluorescence of BosiiteHide

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.

References for BosiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ertl, A., Baksheev, I.A., Giester, G., Lengauer, C.L., Prokofiev, V.Y. and Zorina, L.D. (2015) Bosiite, IMA 2014-094. CNMNC Newsletter No. 24, April 2015, page 249; Mineralogical Magazine, 79, 247-251.
Ertl, A., Baksheev, I.A., Giester, G., Lengauer, C.L., Prokofiev, V.Yu., Zorina, L.D. (2016): Bosiite, NaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3O, a new ferric member of the tourmaline supergroup from the Darasun gold deposit, Transbaikalia, Russia. European Journal of Mineralogy: 28: 581-591.

Internet Links for BosiiteHide

Localities for BosiiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Czech Republic
 
  • Vysočina Region
    • Žďár nad Sázavou District
Flégr, T., Novák, M., & Cempírek, J. (2016). New occurrence of bosiite in the Řečice pegmatite, Czech Republic.
Italy
 
  • Piedmont
    • Cuneo Province
      • Maira Valley
        • Canosio
          • Vallone della Valletta
Bosi, F., Cámara, F., Ciriotti, M.E., Hålenius, U., Reznitskii, L., Stagno, V. (2017): Crystal-chemical relations and classification problems in tourmalines belonging to the oxy-schorl–oxy-dravite–bosiite–povondraite series. European Journal of Mineralogy, 29, 445-455.
Russia (TL)
 
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Chitinskaya Oblast'
        • Vershino-Darasunskiy
Ertl, A., Baksheev, I.A., Giester, G., Lengauer, C.L., Prokofiev, V.Y. and Zorina, L.D. (2015) Bosiite, IMA 2014-094. CNMNC Newsletter No. 24, April 2015, page 249; Mineralogical Magazine, 79, 247-251.
Mineral and/or Locality  
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