This page is currently not sponsored. Click here to sponsor this page.
|Hardness:||5½ - 6½|
|Name:||In allusion to its dimorphous relation to fergusonite-(Y). After Robert Ferguson (1767-1840), Scottish landowner, politician and mineral collector.|
This page provides mineralogical data about β-Fergusonite-(Y).
Classification of β-Fergusonite-(Y)
|Strunz 8th edition ID:||4/D.24-10|
|Nickel-Strunz 10th (pending) edition ID:||4.DG.10|
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
G : With large (+- medium-sized) cations; chains of edge-sharing octahedra
|Dana 8th edition ID:||126.96.36.199|
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4
|Hey's CIM Ref.:||18.2.2|
18 : Niobates and Tantalates
2 : Niobates and tantalates containing rare earths but not U
Please feel free to link to this page.
Type Occurrence of β-Fergusonite-(Y)
|Type Locality:||Asht-Sai, Shaidan Massif, Kuraminskii Range, Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad), Tajikistan|
Physical Properties of β-Fergusonite-(Y)
|Hardness (Mohs):||5½ - 6½|
Optical Data of β-Fergusonite-(Y)
|RI values:||nα = 2.060 - 2.190 nβ = 2.060 - 2.190 nγ = 2.060 - 2.190|
|Maximum Birefringence:||δ = 0.000|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Surface Relief:||Very High|
|Dispersion:||r < v|
Chemical Properties of β-Fergusonite-(Y)
|Essential elements:||Nb, O, Y|
|All elements listed in formula:||Nb, O, Y|
Relationship of β-Fergusonite-(Y) to other Species
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for β-Fergusonite-(Y)
|Health Warning:||No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.|
References for β-Fergusonite-(Y)
American Mineralogist (1961): 46: 1516.
Internet Links for β-Fergusonite-(Y)
Localities for β-Fergusonite-(Y)
The 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.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
|Fade toolbar when not in focus||Fix toolbar to bottom of page|
|Hide Social Media Links|
|Slideshow frame delay||seconds|