Hundholmenite-(Y)
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About Hundholmenite-(Y)
Formula:
(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48
Colour:
Pale brown
Lustre:
Adamantine, Vitreous
Hardness:
5 - 6
Specific Gravity:
5.206 (Calculated)
Crystal System:
Trigonal
Member of:
Name:
After the type locality of Hundholmen, Tysfjord, Nordland County, Norway.
Type Locality:
Isostructural with:
Classification of Hundholmenite-(Y)
Approved
Approval Year:
2006
First Published:
2007
8/B.33-
9.AJ.35
9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4
9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4
Physical Properties of Hundholmenite-(Y)
Adamantine, Vitreous
Transparency:
Translucent
Colour:
Pale brown
Streak:
White
Hardness:
5 - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None observed
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
5.206 g/cm3 (Calculated)
Optical Data of Hundholmenite-(Y)
Type:
Uniaxial (-)
Pleochroism:
Non-pleochroic
Chemical Properties of Hundholmenite-(Y)
Formula:
(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48
IMA Formula:
(Y,REE,Ca,Na)15(Al,Fe3+)CaxAs3+1-x(Si,As5+)Si6B3(O,F)48
Crystallography of Hundholmenite-(Y)
Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3m
Cell Parameters:
a = 10.675(6) Å, c = 27.02(2) Å
Ratio:
a:c = 1 : 2.531
Unit Cell V:
2667 ų
Z:
3
Morphology:
Subhedral crystals up to 1 mm diameter.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.38 | (33) |
3.114 | (43) |
3.095 | (29) |
2.972 | (100) |
2.947 | (76) |
2.924 | (66) |
2.681 | (36) |
1.978 | (37) |
Type Occurrence of Hundholmenite-(Y)
Place of Conservation of Type Material:
Natural History Museum, University of Oslo, 41590.
Geological Setting of Type Material:
Granitic pegmatite.
Associated Minerals at Type Locality:
Reference:
Raade, G., Johnsen, O., Erambert, M., Petersen, O.V. (2007) Hundholmenite-(Y) from Norway – a new mineral species in the vicanite group: descriptive data and crystal structure. Mineralogical Magazine: 71: 179-192.
Synonyms of Hundholmenite-(Y)
Relationship of Hundholmenite-(Y) to other Species
Member of:
Other Members of this group:
Laptevite-(Ce) | Ca6(Fe2+,Mn2+)Y3REE7(SiO4)3(PO4)(B3Si3O18)(BO3)F11 | Trig. 3m : R3m |
Okanoganite-(Y) | (Na,Ca)3(Y,Ce)12Si6B2O27F14 | Trig. 3m : R3m |
Proshchenkoite-(Y) | Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14 | Trig. 3m : R3m |
Vicanite-(Ce) | (Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7 | Trig. |
Common Associates
Associated Minerals Based on Photo Data:
Yttrofluorite | 8 photos of Hundholmenite-(Y) associated with Yttrofluorite on mindat.org. |
Bastnäsite-(Ce) | 2 photos of Hundholmenite-(Y) associated with Bastnäsite-(Ce) on mindat.org. |
Allanite-(Ce) | 1 photo of Hundholmenite-(Y) associated with Allanite-(Ce) on mindat.org. |
Thalénite-(Y) | 1 photo of Hundholmenite-(Y) associated with Thalénite-(Y) on mindat.org. |
Keiviite-(Y) | 1 photo of Hundholmenite-(Y) associated with Keiviite-(Y) on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
9.AJ. | Hingganite-(Nd) | (Nd,Y,Ce,Sm)2(◻,Fe2+)Be2[SiO4]2(OH)2 | Mon. 2/m : P21/b |
9.AJ.05 | Grandidierite | (Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2 | Orth. mmm (2/m 2/m 2/m) |
9.AJ.05 | Ominelite | (Fe2+,Mg)(Al,Fe3+)3(SiO4)(BO3)O2 | Orth. mmm (2/m 2/m 2/m) |
9.AJ.10 | Dumortierite | (Al,Fe3+)7(SiO4)3(BO3)O3 | Orth. mmm (2/m 2/m 2/m) |
9.AJ.10 | Holtite | (Ta0.6◻0.4)Al6BSi3O18(O,OH)2.25 | Orth. mmm (2/m 2/m 2/m) : Pnma |
9.AJ.10 | Magnesiodumortierite | (Mg,Ti,◻(Al,Mg)2Al4Si3O18-y(OH)yB y = 2-3 | Orth. |
9.AJ.15 | Garrelsite | Ba3NaSi2B7O16(OH)4 | Mon. |
9.AJ.20 | Bakerite | Ca4(H5B5Si3O20) | Mon. 2/m : P21/b |
9.AJ.20 | Datolite | CaB(SiO4)(OH) | Mon. 2/m : P21/b |
9.AJ.20 | Gadolinite-(Ce) | (Ce,La,Nd,Y)2Fe2+Be2Si2O10 | Mon. 2/m |
9.AJ.20 | Gadolinite-(Y) | Y2Fe2+Be2Si2O10 | Mon. 2/m : P21/b |
9.AJ.20 | Hingganite-(Ce) | (Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2 | Mon. 2/m : P21/b |
9.AJ.20 | Hingganite-(Y) | (Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2 | Mon. 2/m : P21/b |
9.AJ.20 | Hingganite-(Yb) | (Yb,Y,REE)2□Be2[SiO4]2(OH)2 | |
9.AJ.20 | Homilite | Ca2(Fe2+,Mg)B2Si2O10 | Mon. 2/m : P21/b |
9.AJ.20 | Melanocerite-(Ce) | (Ce,Ca)5(SiO4,BO4)3(OH,0) | Hex. |
9.AJ.20 | Minasgeraisite-(Y) | BiCa(Y,Ln)2(□,Mn)2(Be,B,Si)4Si4O16 [(OH),O]4 | Tric. 1 : P1 |
9.AJ.20 | Calcybeborosilite-(Y) | (Y,Ca)2(□,Fe2+)(B,Be)2[SiO4]2(OH,O)2 | Mon. |
9.AJ.25 | Stillwellite-(Ce) | (Ce,La,Ca)BSiO5 | |
9.AJ.30 | Cappelenite-(Y) | Ba(Y,Ce)6Si3B6O24F2 | Trig. 3 : P3 |
9.AJ.35 | Okanoganite-(Y) | (Na,Ca)3(Y,Ce)12Si6B2O27F14 | Trig. 3m : R3m |
9.AJ.35 | Vicanite-(Ce) | (Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7 | Trig. |
9.AJ.35 | Proshchenkoite-(Y) | Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14 | Trig. 3m : R3m |
9.AJ.40 | Jadarite | LiNaSiB3O7(OH) | Mon. 2/m |
Fluorescence of Hundholmenite-(Y)
Not fluorescent in LW or SW.
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.
References for Hundholmenite-(Y)
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Raade, G., Johnsen, O., Erambert, M., Petersen, O.V. (2007) Hundholmenite-(Y) from Norway – a new mineral species in the vicanite group: descriptive data and crystal structure. Mineralogical Magazine: 71: 179-192.
Internet Links for Hundholmenite-(Y)
mindat.org URL:
https://www.mindat.org/min-29098.html
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External Links:
Mineral Dealers:
Localities for Hundholmenite-(Y)
Locality List




All localities listed without proper references should be considered as questionable.
Italy | |
| Bracco, R., Balestra, C., Castellaro, F., Mills, S.J., Ma, C., Callegari, A.M., Boiocchi, M., Bersani, D., Cadoni, M., Ciriotti, M.E. (2012): Nuovi minerali di terre rare da Costa Balzi Rossi, Magliolo (SV), Liguria. Micro, 2/2012, 66-77. |
Norway | |
| Raade, G., Johnsen, O., Erambert, M., Petersen, O.V. (2007): Hundholmenite-(Y) from Norway – a new mineral species in the vicanite group: descriptive data and crystal structure. Mineralogical Magazine, 71, 179-192.Husdal, T. (2008): The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum.Skrift 38: 5-28 |
| Husdal, T. (2008): The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum Skrift 38: 5-28 |
| Raade, G., Johnsen, O., Erambert, M., Petersen, O.V. (2007): Hundholmenite-(Y) from Norway – a new mineral species in the vicanite group: descriptive data and crystal structure. Mineralogical Magazine, 71, 179-192. |
Raade, G., Johnsen, O., Erambert, M., Petersen, O.V. (2007): Hundholmenite-(Y) from Norway – a new mineral species in the vicanite group: descriptive data and crystal structure. Mineralogical Magazine, 71, 179-192. |
Stetind pegmatite, Tysfjord, Nordland, Norway