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Fersmite

A valid IMA mineral species - grandfathered
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About FersmiteHide

06759740014948485138161.jpg
Post stamp with academic A. E. Fersman portrait.
Formula:
(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Colour:
Black, dark brown, lemon-yellow to yellow-brown
Lustre:
Sub-Vitreous, Resinous, Sub-Metallic
Hardness:
4 - 4½
Specific Gravity:
4.78 (Calculated)
Crystal System:
Orthorhombic
Member of:
Name:
Named in 1946 by Elsa Maximilianovna Bohnstedt-Kupletskaya and T. A. Burova in honour of academic Aleksandr Evgenievich Fersman (November 8, 1883 St. Petersburg, Russia - May 20, 1945 Sochi, Georgia), mineralogist, founder of the Fersman Mineralogical Museum in Moscow, Russia. The mineral fersmanite is also named after him.
Fersmite (similar to Fergusonite) is one of the most low-titanoan niobates.
Compare Vigezzite.


Unique IdentifiersHide

Mindat ID:
1539
Long-form identifier:
mindat:1:1:1539:0
GUID
(UUID V4):
f8e6caed-9603-49e3-af1f-17935f1360a2

IMA Classification of FersmiteHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
CaNb2O6

Classification of FersmiteHide

4.DG.05

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
8.3.3.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
18.2.12

18 : Niobates and Tantalates
2 : Niobates and tantalates containing rare earths but not U

Mineral SymbolsHide

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

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

Pronunciation of FersmiteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of FersmiteHide

Sub-Vitreous, Resinous, Sub-Metallic
Transparency:
Translucent, Opaque
Colour:
Black, dark brown, lemon-yellow to yellow-brown
Streak:
Grayish brown
Hardness:
4 - 4½ on Mohs scale
Hardness:
VHN100=572 - 593 - Vickers
Tenacity:
Very brittle
Cleavage:
Distinct/Good
{100}
Parting:
present
Fracture:
Sub-Conchoidal
Density:
4.78 g/cm3 (Calculated)

Optical Data of FersmiteHide

Type:
Biaxial (+)
RI values:
nα = 2.070 nβ = 2.080 nγ = 2.190
2V:
Measured: 20° to 25°, Calculated: 36°
Max Birefringence:
δ = 0.120
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r < v strong
Pleochroism:
Weak
Comments:
X = Y = pale greenish yellow to colorless; Z = dark greenish yellow to olive-yellow

Chemistry of FersmiteHide

Mindat Formula:
(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6

Crystallography of FersmiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcn
Cell Parameters:
a = 14.926(4) Å, b = 5.752(4) Å, c = 5.204(4) Å
Ratio:
a:b:c = 2.595 : 1 : 0.905
Unit Cell V:
446.79 ų (Calculated from Unit Cell)
Z:
4
Morphology:
prismatic crystals
Comment:
commonly metamict

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000196FersmiteCummings J P, Simonsen S H (1970) The crystal structure of calcium niobate (CaNb2O6) American Mineralogist 55 90-971970synthetic0293
0012371FersmiteGurbanova O A, Rastsvetaeva R K, Kashaev A A, Smolin A S (2001) Refined crystal structure of TR-fersmite (TR = Ce) Crystallography Reports 46 194-1952001Ust'-Biran deposit0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.049 Å(100)
3.762 Å(21)
1.527 Å(15)
2.493 Å(14)
1.183 Å(13)
1.211 Å(11)
1.967 Å(10)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks
36 : Carbonatites, kimberlites, and related igneous rocks
Geological Setting:
accessory mineral in nepheline syenites and carbonatites.

Type Occurrence of FersmiteHide

Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 44383, 44384

Other Language Names for FersmiteHide

German:Fersmit
Simplified Chinese:铌钙矿
Spanish:Fersmita

Relationship of Fersmite to other SpeciesHide

Member of:
Other Members of this group:
Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
Kobeite-(Y)(Y,U)(Ti,Nb)2(O,OH)6 (?)Iso.
Loranskite-(Y)(Y,Ce,Ca)ZrTaO6 (?)
Tanteuxenite-(Y)Y(Ta,Nb,Ti)2(O,OH)6Orth. mmm (2/m 2/m 2/m) : Pbcn
Uranopolycrase(U4+,Y)(Ti,Nb)2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6Amor.

Common AssociatesHide

Associated Minerals Based on Photo Data:
5 photos of Fersmite associated with Microlite GroupA2-mTa2X6-wZ-n
4 photos of Fersmite associated with Uranmicrolite (of Hogarth 1977)(Ca,U,Na)2-x(Ta,Nb)2(O,OH)7
3 photos of Fersmite associated with AlbiteNa(AlSi3O8)
3 photos of Fersmite associated with CassiteriteSnO2
3 photos of Fersmite associated with SvanbergiteSrAl3(PO4)(SO4)(OH)6
2 photos of Fersmite associated with DolomiteCaMg(CO3)2
2 photos of Fersmite associated with LueshiteNaNbO3
1 photo of Fersmite associated with Hydroxylbastnäsite-(Ce)Ce(CO3)(OH)
1 photo of Fersmite associated with Ancylite-(Ce)CeSr(CO3)2(OH) · H2O
1 photo of Fersmite associated with Hydroxycalciopyrochlore(Ca,Na,U,◻)2(Nb,Ti)2O6(OH)

Related Minerals - Strunz-mindat GroupingHide

4.DG.05Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DG.05Kobeite-(Y)(Y,U)(Ti,Nb)2(O,OH)6 (?)Iso.
4.DG.05Loranskite-(Y)(Y,Ce,Ca)ZrTaO6 (?)
4.DG.05Tanteuxenite-(Y)Y(Ta,Nb,Ti)2(O,OH)6Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DG.05Uranopolycrase(U4+,Y)(Ti,Nb)2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DG.05Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6Amor.
4.DG.10Clinofergusonite-(Y)YNbO4Mon. 2/m
4.DG.10Clinofergusonite-(Nd)(Nd,Ce)NbO4Mon.
4.DG.10Clinofergusonite-(Ce)CeNbO4Mon. 2/m : B2/m
4.DG.10Yttrotantalite-(Y)(Y,U,Fe2+)(Ta,Nb)(O,OH)4Orth.
4.DG.15FoorditeSn2+Nb2O6Mon. 2/m : B2/b
4.DG.15ThoreauliteSn2+Ta2O6Mon. 2/m : B2/b
4.DG.20RaspitePb(WO4)Mon. 2/m : P21/b

Fluorescence of FersmiteHide

Fluoresces yellow-green to bluish green under SW and LW UV; light blue cathodoluminescence

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 FersmiteHide

References for FersmiteHide

Localities for FersmiteHide

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 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.
Australia
 
  • Western Australia
    • Port Hedland Shire
      • Abydos Station
        • Wodgina
Fetherston (2004)
Austria
 
  • Styria
    • Deutschlandsberg District
      • Deutschlandsberg
Postl et al. (1987)
    • Murtal District
      • Pusterwald
        • Pusterwald-Bretstein area
          • Spodumene pegmatites
Mali (2004)
Mali (2004)
Brazil
 
  • Paraíba
    • Pedra Lavrada
Beurlen et al. (2008)
  • Rio Grande do Norte
    • Equador
Beurlen +4 other references
  • Santa Catarina
    • Anitápolis
Comin-Chiaramonti et al. (2008)
Canada
 
  • British Columbia
    • Golden Mining Division
      • Radium Hot Springs
GJ Simandl (1991)
    • Kamloops Mining Division
      • Blue River carbonatites
Chudy T et al. (2014)
        • Verity claim
Blue River Carbonatites et al. (http://www.commerceresources.com/i/pdf/05-BCGOVRREPORT.pdf)
      • Lempriere Station
George J. Simandl (2001)
Berger et al. (2009)
    • Omineca Mining Division
      • Williston Lake
Jennifer Pell (1994) +2 other references
  • Manitoba
    • Lac-du-Bonnet area
      • Greer Lake
        • Whiteshell Park
Bannatyne (1985)
      • Shatford Lake
Camacho et al. (2014)
  • Nova Scotia
    • Cumberland Co.
Papoutsa et al. (2013)
  • Ontario
    • Thunder Bay District
McLaughlin (1990)
      • Killala Lake Area
Savard (2019)
  • Yukon
    • Watson Lake mining district
      • True Blue property (Shark property)
in International Workshop on the ... +1 other reference
China
 
  • Hubei
    • Shiyan
      • Zhushan Co.
Shi Li (1980) +4 other references
  • Inner Mongolia
    • Baotou City (Baotou Prefecture)
      • Bayan Obo mining district
        • Bayan Obo
          • Bayan Obo deposit
Liu +1 other reference
Zhang Peishan et al. (1996)
  • Liaoning
    • Dandong
      • Kuandian County
        • Saima complex
Wu et al. (2023)
  • Sichuan
    • Liangshan Yi
      • Huili County
Xue et al. (2021)
Xue et al. (2021)
    • Panzhihua
      • Yanbian County
Lin et al. (1995)
Czech Republic
 
  • Olomouc Region
    • Šumperk District
      • Ruda nad Moravou
Novak et al. (2010) +2 other references
      • Velké Losiny
        • Maršíkov (Marchendorf)
Ddolníček Z et al. (2020)
Novák
Sejkora +2 other references
  • South Bohemian Region
    • Písek District
      • Kovářov
        • Vepice
Sejkora et al. (2020)
  • Vysočina Region
    • Jihlava District
Novak et al. (1996)
    • Třebíč District
      • Kožichovice
Výravský et al. (2017)
DR Congo
 
  • North Kivu
    • Rutshuru Territory
      • Bwito
www.handbookofmineralogy.com (2012) +1 other reference
  • Tanganyika
Voloshin A.V. (1988)
France
 
  • Occitanie
    • Hautes-Pyrénées
      • Bagnères-de-Bigorre
        • Avezac-Prat-Lahitte
MONCHOUX P. et al. (2006)
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Mendig
        • Mendig
Hentschel
Hentschel
          • Wingertsberg
Hentschel
      • Pellenz
        • Kruft
Hentschel
Greenland
 
  • Kujalleq
Petersen (2001)
Bohse et al. (2001)
India
 
  • Odisha
    • Malkangiri District
Acharya et al. (1982)
  • West Bengal
    • Purulia District
Chakrabarty et al. (2018)
Italy
 
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Baveno
        • Feriolo
Guastoni et al. (2010)
        • Oltrefiume
          • Mount Camoscio
Grill (1935)
Sergio Varvello collection
      • Craveggia
        • Rio Vasca
Piccoli et al. (2007)
      • Druogno
        • Orcesco
      • Trontano
        • Pizzo Marcio
Mattioli (1979 a) +9 other references
Piccoli et al. (2007) +1 other reference
Callegari A. et al. (4)
Albertini (2011)
  • Sardinia
    • Sassari Province
      • Telti
Gamboni et al. (2001)
Kazakhstan
 
  • Abai Region
    • Tarbagatai Range
      • Akzhaylyautas Mts (Akzhailyautas Mts; Akjaylautas Mts; Akzhalautas Mts)
Stepanov et al. (2012)
Madagascar
 
  • Vakinankaratra
    • Betafo District
      • Ambohimanambola
Pezzotta (1999)
De Vito et al. (2006)
Mongolia
 
  • Khovd Province
    • Myangad District
Pavel.M. Kartashov (n.d.) +1 other reference
        • Mount Ulyn Khuren
Kartashov P.M. et al. (Mongolian Altai)
Pavel.M. Kartashov (n.d.) +1 other reference
Mozambique
 
  • Zambezia Province
    • Mocuba District
      • Mocuba
Moiana (2010)
North Korea
 
  • Kangwon Province
    • Pyonggang County
Kim et al. (2023)
Norway
 
  • Agder
    • Evje og Hornnes
      • Landsverk
Larsen (2001)
    • Iveland
      • Frikstad
Nordrum (2008) +1 other reference
  • Nordland
    • Hamarøy
Husdal (2023)
  • Svalbard
    • Spitsbergen
      • Hornsund
Pršek et al. (2010)
  • Telemark
    • Drangedal
      • Tørdal
Raade (1993)
    • Nome
Neumann (1985)
  • Vestfold
    • Larvik
      • Malerød
Larsen (2021)
Poland
 
  • Lower Silesian Voivodeship
    • Dzierżoniów County
      • Piława Górna
PIECZKA et al. 2010: Nb-Ta minerals in ...
Szuszkiewicz et al. (2013) +1 other reference
    • Karkonosze County
      • Szklarska Poręba
Evans et al. (2018)
    • Wrocław County
      • Gmina Jordanów Śląski
Pieczka et al. (2023)
Pieczka et al. (2023)
    • Ząbkowice Śląskie County
      • Gmina Ząbkowice Śląskie
        • Szklary
Pieczka A. 2006: An unusual manganoan apatite from the Szklary pegmatite (Lower Silesia, Poland) +3 other references
Romania
 
  • Harghita County
Pál Molnár (2000)
    • Joseni
Hirtopanu et al. (2013)
  • Sibiu County
    • Lotru-Cibin Mountains
Săbău (2010)
Russia
 
  • Chelyabinsk Oblast
    • Ilmen Mountains
Makagonov et al. (2017)
    • Miass
Sorokina et al. (2019)
Chakhmouradian et al. (2015)
Nedosekova (2007) +1 other reference
Popova et al. (2018)
Pekov (1998)
webmineral.ru (2016)
  • Irkutsk Oblast
    • Vitim Plateau
      • Biraya and Bya Rivers confluence area (Chara Basin)
        • Biraya Fe-REE ore occurrence
Chakhmouradian et al. (2015)
  • Murmansk Oblast
Chakhmouradian et al. (1999)
  • Sverdlovsk Oblast
    • Adui Batholith
Vital'Evna (2021)
    • Rezhevsky District
      • Lipovsk pegmatite field
Igor.V. Pekov (2008)
  • Tuva
Chakhmouradian et al. (2015)
Slovakia
 
  • Banská Bystrica Region
    • Banská Bystrica District
      • Brusno
Uher
    • Lučenec District
      • Čamovce
Huraiová et al. (2019)
  • Košice Region
    • Rožňava District
      • Dobšiná
        • Dobšiná mining district
Uher P. et al. (2018)
  • Trnava Region
    • Piešťany District
Uher et al. (Považský Inovec)
Uher P. +1 other reference
South Africa
 
  • Limpopo
    • Waterberg District Municipality
      • Thabazimbi Local Municipality
        • Thabazimbi
          • Glenover carbonatite
Cairncross et al. (1995)
  • North West
    • Bojanala Platinum District Municipality
      • Moses Kotane Local Municipality
VERWOERD (1986)
South Korea
 
  • North Chungcheong Province
    • Chungju City
      • Joongwon-gun
        • Mt. Eorae
Pavel.M. Kartashov (n.d.)
Spain
 
  • Canary Islands
    • Las Palmas Province
Ковальчук et al. (2014)
Casillas et al. (2011)
Sri Lanka
 
  • Sabaragamuwa Province
    • Ratnapura District
Pavel M. Kartashov analytical data (2011)
Sweden
 
  • Västernorrland County
    • Sundsvall
Sandström et al. (2010)
Sandström et al. (2010)
Sandström et al. (2010)
Tajikistan
 
  • Gorno-Badakhshan
    • Shughnon
      • Shakhdara Range
Pautov et al. (2022)
Tanzania
 
  • Mbeya Region
    • Mbeya
Chakhmouradian et al. (2015)
UK
 
  • England
    • Devon
      • West Devon
        • Okehampton Hamlets
von Knorring et al. (1984)
USA
 
  • Alaska
    • Prince of Wales-Hyder Census Area
      • Ketchikan Mining District
        • Prince of Wales Island
          • Bokan Mountain
Philpotts et al. (1998)
          • Kendrick Bay
            • West Arm of Kendrick Bay
Philpotts et al. (1998)
  • Arkansas
Howard (1987)
      • Little Rock
Rocks and Minerals (1989)
Min News (2000)
  • California
    • San Diego County
      • Mesa Grande Mining District
        • Gem Hill
Rocks and Mineral: 1998: 168 & 178
Foord et al. (1978)
  • Colorado
    • Fremont County
Eckel et al. (1997)
USGS Prof Paper 649 +1 other reference
    • Larimer County
      • Crystal Mountain Pegmatite Mining District (Storm Mountain Mining District)
Eckel et al. (1997)
  • Maine
    • Aroostook County
      • Pennington Mountain
Chunzeng Wang +2 other references
  • Michigan
    • Dickinson County
      • Randville
Buchholz et al. (2014)
  • Montana
    • Ravalli County
      • Mineral Point Mining District
        • Alta
Am Min (1959) +1 other reference
American Mineralogist (1961)
  • New Hampshire
    • Carroll County
      • Albany
Nashua Min. Soc. Display Cat.
  • New Jersey
    • Sussex County
      • Franklin
        • Franklin Mine
Chris O'Neill and Travis Olds
  • North Carolina
    • Cleveland County
      • Kings Mountain
Rocks and Minerals +2 other references
  • Virginia
    • Amelia County
      • Amelia (Amelia Court House)
a classic locality revisited. The Canadian Mineralogist (2) +1 other reference
 
矿物 and/or 产地  
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