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Tavorite

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Tavorite

Serra Branca pegmatite, Pedra Lavrada, Borborema mineral province, Paraíba, Brazil
Tavorite

Tip Top Mine Fourmile, Custer District, Custer Co., South Dakota, USA
Tavorite

Tip Top Mine Fourmile, Custer District, Custer Co., South Dakota, USA
Tavorite

Serra Branca pegmatite, Pedra Lavrada, Borborema mineral province, Paraíba, Brazil
Tavorite

Tip Top Mine Fourmile, Custer District, Custer Co., South Dakota, USA
Tavorite

Tip Top Mine Fourmile, Custer District, Custer Co., South Dakota, USA
Tavorite

Serra Branca pegmatite, Pedra Lavrada, Borborema mineral province, Paraíba, Brazil
Tavorite

Tip Top Mine Fourmile, Custer District, Custer Co., South Dakota, USA
Formula:
LiFe3+(PO4)(OH)
System:
Triclinic
Colour:
Grass-green, yellow-green
Lustre:
Sub-Vitreous, Resinous, Waxy, Greasy
Hardness:
5
Name:
Named in 1954 by Marie Louise Lindberg (Smith) and William T. pecora in honor of Elysairio Tavora [b. 1911 Brasil], professor of mineralogy, Universidad de Brasil Rio de Janeiro, Brasil.
Isostructural with:
Amblygonite, Montebrasite
Amblygonite Group.

Visit gemdat.org for gemological information about Tavorite.


Classification of Tavorite

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
Strunz 8th ed.:
7/B.02-60
Nickel-Strunz 10th (pending) ed.:
8.BB.05

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
Dana 8th ed.:
41.5.9.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
Hey's CIM Ref.:
19.1.14

19 : Phosphates
1 : Phosphates of the alkali metals

Physical Properties of Tavorite

Lustre:
Sub-Vitreous, Resinous, Waxy, Greasy
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Grass-green, yellow-green
Streak:
Pale yellow green
Hardness (Mohs):
5
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {100}, good on {110}, distinct on {011}, and on {001}, imperfect.
Fracture:
Micaceous
Density:
3.32 g/cm3 (Measured)    3.33 g/cm3 (Calculated)

Optical Data of Tavorite

Type:
Biaxial (+)
RI values:
nα = 1.795 nβ = 1.811 nγ = 1.861
2V:
Measured: 74° , Calculated: 78°
Birefringence:
0.066
Max Birefringence:
δ = 0.066
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r << v
Optical Extinction:
Y^b ~ 0°, Z^c ~38°, X^a ~ 15°
Pleochroism:
Strong
Comments:
X = Y = yellow-green, Z = colorless

Chemical Properties of Tavorite

Formula:
LiFe3+(PO4)(OH)
IMA Formula:
LiFe3+PO4(OH)
Elements listed in formula:
Fe, H, Li, O, P - search for minerals with similar chemistry

Crystallography of Tavorite

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.340 Å, b = 7.283 Å, c = 5.110 Å
α = 109.29°, β = 97.86°, γ = 106.32°
Ratio:
a:b:c = 0.733 : 1 : 0.702
Unit Cell Volume:
V 174.14 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Bladed crystals, often rounded and/or etched. Found as fine-grained masses to sever mm
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.99 (50)
4.68 (30)
3.95 (20)
3.285 (90)
3.045 (100)
2.474 (40)
1.662 (3b)

Type Occurrence of Tavorite

Type Locality:
Sapucaia mine (Proberil mine), Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
General Appearance of Type Material:
Bright lime green scales and fine-grained masses
Geological Setting of Type Material:
Late stage phosphate mineralization in a granite pegmatite
Associated Minerals at Type Locality:
BarbosaliteHureauliteJahnsiteRockbridgeiteTriphylite
Vivianite

Relationship of Tavorite to other Species

Member of:
Amblygonite Group
Other Members of Group:
AmblygoniteLiAl(PO4)F
MontebrasiteLiAl(PO4)(OH)
NatromontebrasiteMasses of white mineral.
Related Minerals - Nickel-Strunz Grouping):
8.BB.XArsenowagneriteMg2(AsO4)F
8.BB.05AmblygoniteLiAl(PO4)F
8.BB.05MontebrasiteLiAl(PO4)(OH)
8.BB.10Triplite(Mn2+,Fe2+)2(PO4)(F,OH)
8.BB.10Zwieselite(Fe2+,Mn2+)2(PO4)F
8.BB.15SarkiniteMn22+(AsO4)(OH)
8.BB.15Triploidite(Mn2+,Fe2+)2(PO4)(OH)
8.BB.15Wagnerite(Mg,Fe2+)2(PO4)F
8.BB.15Wolfeite(Fe2+,Mn2+)2(PO4)(OH)
8.BB.15Stanĕkite(Mn2+,Fe2+,Mg)Fe3+(PO4)O
8.BB.15JoosteiteMn2+(Mn3+,Fe3+)(PO4)O
8.BB.15HydroxylwagneriteMg2(PO4)(OH)
8.BB.20HoltedahliteMg2(PO4)(OH)
8.BB.20Satterlyite(Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6
8.BB.25AlthausiteMg4(PO4)2(OH,O)(F,☐)
8.BB.30AdamiteZn2(AsO4)(OH)
8.BB.30EveiteMn22+(AsO4)(OH)
8.BB.30LibetheniteCu2(PO4)(OH)
8.BB.30OliveniteCu2(AsO4)(OH)
8.BB.30ZincolibetheniteCuZn(PO4)(OH)
8.BB.30ZincoliveniteCuZn(AsO4)(OH)
8.BB.30AuriacusiteFe3+Cu2+(AsO4)O
8.BB.35ParadamiteZn2(AsO4)(OH)
8.BB.35TarbuttiteZn2(PO4)(OH)
8.BB.40BarbosaliteFe2+Fe23+(PO4)2(OH)2
8.BB.40HentscheliteCuFe23+(PO4)2(OH)2
8.BB.40Lazulite(Mg,Fe2+)Al2(PO4)2(OH)2
8.BB.40ScorzaliteFe2+Al2(PO4)2(OH)2
8.BB.40WilhelmkleiniteZnFe23+(AsO4)2(OH)2
8.BB.45TrolleiteAl4(PO4)3(OH)3
8.BB.50NamibiteCu(BiO)2(VO4)(OH)
8.BB.55Phosphoellenbergerite(Mg,◻)2Mg12(PO4,PO3OH)6(PO3OH,CO3)2(OH)6
8.BB.60UrusoviteCuAl(AsO4)O
8.BB.65TheoparacelsiteCu3(As2O7)(OH)2
8.BB.70TuraniteCu5(VO4)2(OH)4
8.BB.75StoiberiteCu5(VO4)2O2
8.BB.80FingeriteCu11(VO4)6O2
8.BB.85AverieviteCu6(VO4)2O2Cl2
8.BB.90LipscombiteFe2+Fe23+(PO4)2(OH)2
8.BB.90RichelliteCaFe23+(PO4)2(OH,F)2
8.BB.90ZinclipscombiteZnFe23+(PO4)2(OH)2
Related Minerals - Hey's Index Grouping:
19.1.1LithiophosphateLi3PO4
19.1.2OlympiteNa5Li(PO4)2
19.1.3NahpoiteNa2HPO4
19.1.4DorfmaniteNa2HPO4 · 2H2O
19.1.5NalipoiteNaLi2PO4
19.1.6StercoriteNa(NH4)HPO4 · 4H2O
19.1.7Archerite(K,NH4)(H2PO4)
19.1.8Biphosphammite(NH4,K)(H2PO4)
19.1.9Phosphammite(NH4)2(HPO4)
19.1.10LithiophiliteLiMn2+PO4
19.1.11SickleriteLi1-x(Mnx3+Mn2+1-x)PO4
19.1.12FerrisickleriteLi1-x(Fex3+Fe2+1-x)PO4
19.1.13TriphyliteLiFe2+PO4
19.1.15MarićiteNaFe2+(PO4)

Other Names for Tavorite

Name in Other Languages:
German:Tavorit
Spanish:Tavorita

Other Information

Fluorescence in UV light:
Not fluorescent
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 Tavorite

Reference List:
Science (1954), 119, 739
Lindberg, M. L. and Pecora, W. T. (1955) Tavorite and barbosalite, two new phosphate minerals from Minas Gerais, Brazil. American Mineralogist: 40: 952-966.
American Mineralogist: 1977): 62: 559.
Soviet Physics – Crystallography: 29: 27-30.

Internet Links for Tavorite

mindat.org URL:
https://www.mindat.org/min-3896.html
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    • Localities for Tavorite

    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.
    (TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
    Brazil
     
    • Minas Gerais
      • Conselheiro Pena
    		Canadian Mlneralogist Vol. 20, pp. 87-89 (1982)
    Sergio Varvello
    Sergio Varvello collection
    Baijot, M., Hatert, F., Dal Rio, F. & Philipo, S. (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. Canadian Mineralogist 52, 373-397.
      • Galiléia
        • Laranjeiras
    		[MinRec 12:69]
        • Sapucaia do Norte
    		AmMin 89:1087
    Science (1954): 119: 739; Lindberg, M.L. and Pecora, W.T. (1955) Tavorite and barbosalite, two new phosphate minerals from Minas Gerais, Brazil. American Mineralogist 40, 952-966.
    • Paraíba
      • Borborema mineral province
        • Pedra Lavrada
    		Am Min (1955) 40:55-63
    R. Wegner, H. Pöllmann, T. Witzke, & W. Schuckmann (1998): Colquiriite, carlhintzeite, ralstonite and pachnolite from Serra Branca-Pegmatite/Brazil.- Proceedings 17th General Meeting, IMA, August 1998, Toronto, A151
    Germany
     
    • Bavaria
      • Upper Palatinate
        • Waidhaus
          • Hagendorf
    		http://www.berthold-weber.de/h_miner.htm
    Madagascar
     
    • Fianarantsoa Province
      • Amoron'i Mania Region
        • Ampandramaika-Malakialina Pegmatite Field
          • Ambatofinandrahana District
    		Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 63-64
    Morocco
     
    • Drâa-Tafilalet Region
      • Ouarzazate Province
        • Tazenakht
    		FRANSOLET, A.-M. (1974) Les phosphates lithiques des pegmatites de la plaine des Zenaga (Anti-Atlas, Maroc). Notes Serv. géol. Maroc, 35, 137-143
    • Marrakech-Safi Region
      • Rehamna Province
        • Jebilet Mtn (Djebilet Mtn)
          • Sidi Bou Othmane
    		Favreau, G. (2012): Deux pegmatites à phosphates de Sidi Bou Othmane (Maroc). Le Cahier des Micromonteurs, 3-2012, 71-109
    Namibia
     
    • Erongo Region
      • Karibib District
        • Okatjimukuju Farm 55 (Friedrichsfelde Farm)
    		P. Keller and O. von Knorring, Eur. J. Mineral. , 1989, 1, pp. 567-593.
        • Okongava Ost Farm 72
    		Collection of Barry Murphy, Micromount specimen catalogue number 00896
        • Tsaobismund Farm 85
    		Contrib Mineral Petrol (1986) 92:502-517
        • Usakos
    		Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 409 (in English).
    Keller (1974)
    Portugal
     
    • Viseu District
      • Mangualde
    Mineralien Atlas
      • Sátão
        • Ferreira de Aves
          • Aldeia Nova
    Romania
     
    • Sibiu Co.
      • Lotru-Cibin Mts
    		Androne, D.A.M., Buzgar, N., and Kasper, H.U. (2005): Proceedings of the Annual Scientific Session of The Geological Society of Romania, Rosia Montana, 20-21 May 2005, 16-26.
    Rwanda
     
    • Western Province
      • Gatumba District
    		Bertossa, A., 1967. Inventaire des minéraux du Rwanda. Bulletin du Service Géologique de Rwanda 4, 25-45.; Daltry, V.D.C. and O. von Knorring (1998) Type-Mineralogy of Rwanda with Particular Reference to the Buranga Pegmatite. Geologica Belgica 1:1-9
    South Africa
     
    • Northern Cape Province
      • ZF Mgcawu District
        • Kenhardt
    		Minerals of South Africa
    Spain
     
    • Castile and Leon
      • Zamora
        • Villar del Buey
          • Pinilla de Fermoselle
    USA
     
    • New Hampshire
      • Grafton Co.
        • Groton
    		Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
    Mineralogical Record (1973) 4:103-130
    • South Dakota
      • Custer Co.
        • Custer District
          • Custer
    		Rocks & Min.:60:117.; Am Min (1969), 54:969-972
    R&M 75:3 pp 156-169
    R&M 75:3 pp 156-169
          • Fourmile
    		Rocks & Minerals: 60: 117.
          • Pringle
            • Cicero Peak
    		Rocks & Minerals: 75(3): 156-169.
        • Needles
    		R&M 75:3 pp 156-169
      • Pennington Co.
        • Keystone District
    		Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
          • Keystone
    		Rocks & Minerals: 67(6): 380-388.
    Mineral and/or Locality  
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