Bussyite-(Y)
A valid IMA mineral species
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About Bussyite-(Y)
Antoine Alexandre Brutus Bussy
Formula:
(Y,REE,Ca)3(Na,Ca)6MnSi9Be5(O,OH,F)34
Colour:
Dark brown
Lustre:
Vitreous
Hardness:
4
Specific Gravity:
3.11 (Calculated)
Crystal System:
Monoclinic
Name:
Named for its relationship to bussyite-(Ce). The suffix/modifier indicates cerium as the predominant REE. The root name is for French chemist Antoine Alexandre Brutus Bussy (1794–1882) who prepared magnesium and isolated the element beryllium.
Unique Identifiers
Mindat ID:
46442
Long-form identifier:
mindat:1:1:46442:6
GUID
(UUID V4):
(UUID V4):
b11fc50c-7b52-4d00-bc73-cf55953f570b
IMA Classification of Bussyite-(Y)
Approved
IMA Formula:
(Y,REE,Ca)3(Na,Ca)6MnSi9Be5(O,F,OH)34
Approval year:
2014
First published:
2015
Classification of Bussyite-(Y)
9.EA.
9 : SILICATES (Germanates)
E : Phyllosilicates
A : Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
9 : SILICATES (Germanates)
E : Phyllosilicates
A : Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Bsy-Y | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Bussyite-(Y)
Vitreous
Transparency:
Transparent, Translucent
Colour:
Dark brown
Streak:
White
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{101}
{101}
Fracture:
Splintery
Density:
3.11 g/cm3 (Calculated)
Optical Data of Bussyite-(Y)
Type:
Biaxial (-)
RI values:
nα = 1.581 - 1.585 nβ = 1.591 - 1.595 nγ = 1.558 - 1.602
2V:
Measured: 68° (2), Calculated: 79°
Max Birefringence:
δ = 0.023
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
Could not be observed
Optical Extinction:
Z ∧ c = 33° (β obtuse); Y = b; X = [101].
Pleochroism:
Non-pleochroic
Chemistry of Bussyite-(Y)
Mindat Formula:
(Y,REE,Ca)3(Na,Ca)6MnSi9Be5(O,OH,F)34
Crystallography of Bussyite-(Y)
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
B2
Setting:
C2
Cell Parameters:
a = 11.545(2) Å, b = 13.840(2) Å, c = 16.504(4) Å
β = 95.87(2)°
β = 95.87(2)°
Ratio:
a:b:c = 0.834 : 1 : 1.192
Unit Cell V:
2623.1 ų
Z:
4
Morphology:
Blocky, prismatic to bladed crystals, sometimes radiating, up to 3 mm in size.
Twinning:
Lamellar twinning ∥ elongation in some crystals
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.049 Å | (100) |
| 3.529 Å | (38) |
| 3.155 Å | (23) |
| 2.940 Å | (35) |
| 2.840 Å | (50) |
| 2.736 Å | (30) |
| 2.651 Å | (38) |
| 2.629 Å | (30) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Bussyite-(Y)
General Appearance of Type Material:
Blocky to prismatic crystals up to 3 mm.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Canadian Museum of Nature, Ottawa, Ontario, Canada, catalogue number CMNMC 86870.
Geological Setting of Type Material:
Alkaline pegmatite.
Associated Minerals at Type Locality:
Reference:
Grice, Joel, D., Rowe, R. and Poirier, G. (2015): Bussyite-(Y), a new beryllium silicate mineral species from Mont Saint-Hilaire, Quebec. Canadian Mineralogist. 53:235-248
Synonyms of Bussyite-(Y)
Common Associates
Related Minerals - Strunz-mindat Grouping
| 9.EA. | Fluorapophyllite-(NH₄) | NH4Ca4(Si8O20)F · 8H2O |
| 9.EA. | Hydroxymcglassonite-(K) | KSr4Si8O20(OH) · 8H2O |
| 9.EA.05 | Cuprorivaite | CaCuSi4O10 |
| 9.EA.05 | Gillespite | BaFe2+Si4O10 |
| 9.EA.05 | Effenbergerite | BaCuSi4O10 |
| 9.EA.05 | Wesselsite | SrCuSi4O10 |
| 9.EA.07 | Fluorapophyllite-(Cs) | CsCa4(Si8O20)F · 8H2O |
| 9.EA.10 | Ekanite | Ca2ThSi8O20 |
| 9.EA.15 | Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| 9.EA.15 | Hydroxyapophyllite-(K) | KCa4(Si8O20)(OH,F) · 8H2O |
| 9.EA.15 | Fluorapophyllite-(Na) | NaCa4(Si8O20)F · 8H2O |
| 9.EA.20 | Magadiite | Na2Si14O29 · 11H2O |
| 9.EA.25 | Dalyite | K2ZrSi6O15 |
| 9.EA.25 | Davanite | K2TiSi6O15 |
| 9.EA.30 | Sazhinite-(Ce) | Na2CeSi6O14 · 6H2O |
| 9.EA.30 | Sazhinite-(La) | Na3La[Si6O15] · 2H2O |
| 9.EA.35 | Armstrongite | CaZr[Si6O15] · 3H2O |
| 9.EA.40 | Okenite | Ca10Si18O46 · 18H2O |
| 9.EA.45 | Nekoite | Ca3Si6O15 · 7H2O |
| 9.EA.45 | Perettiite-(Y) | Y2Mn4FeSi2B8O24 |
| 9.EA.45 | Badakhshanite-(Y) | Y2Mn4Al(Si2B7BeO24) |
| 9.EA.47 | Shlykovite | KCa[Si4O9(OH)] · 3H2O |
| 9.EA.50 | Cavansite | Ca(VO)Si4O10 · 4H2O |
| 9.EA.50 | Diegogattaite | Na2CaCu2Si8O20 · H2O |
| 9.EA.52 | Yangite | PbMnSi3O8 · H2O |
| 9.EA.55 | Pentagonite | Ca(VO)Si4O10 · 4H2O |
| 9.EA.60 | Penkvilksite | Na4Ti2Si8O22 · 4H2O |
| 9.EA.60 | Tumchaite | Na2Zr(Si4O11) · 2H2O |
| 9.EA.65 | Nabesite | Na2BeSi4O10 · 4H2O |
| 9.EA.70 | Ajoite | (K,Na)Cu7AlSi9O24(OH)6 · 3H2O |
| 9.EA.75 | Zeravshanite | Na2Cs4Zr3[Si18O45]*2H2O |
| 9.EA.80 | Bussyite-(Ce) | (Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4 |
| 9.EA.85 | Plumbophyllite | Pb2Si4O10 · H2O |
Fluorescence of Bussyite-(Y)
No fluorescence in either short-wave or long-wave ultraviolet light.
Other Information
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 Bussyite-(Y)
mindat.org URL:
https://www.mindat.org/min-46442.html
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References for Bussyite-(Y)
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC), CNMNC Newsletter No. 22. Mineralogical Magazine, 78 (5) 1241-1248 doi:10.1180/minmag.2014.078.5.10
Localities for Bussyite-(Y)
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Canada (TL) | |
| Williams et al. (2014) +1 other reference |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada