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Emmonsite

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Samuel Franklin Emmons
Formula:
Fe3+2(TeO3)3 · 2H2O
Colour:
Yellowish-green; light yellow-green in transmitted light.
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
4.52 - 4.55
Crystal System:
Triclinic
Name:
For American economic geologist, Samuel Franklin Emmons (1841-1911), U.S. Geological Survey.
This page provides mineralogical data about Emmonsite.


Hide all sections | Show all sections

Classification of EmmonsiteHide

Approved, 'Grandfathered' (first described prior to 1959)
4.JM.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
M : Tellurites without additional anions, with H2O
34.3.3.1

34 : SELENITES, TELLURITES AND SULFITES
3 : A2(XO3)3·xH2O
28.3.21

28 : Selenites, Selenates, Tellurites, and Tellurates
3 : Tellurites

Physical Properties of EmmonsiteHide

Vitreous
Transparency:
Translucent
Colour:
Yellowish-green; light yellow-green in transmitted light.
Hardness:
Cleavage:
Perfect
On {010}, perfect plus 2 unequal cleavages inclined relative to it, making plane angles of 85° and 95° in {010}.
Density:
4.52 - 4.55 g/cm3 (Measured)    4.719 g/cm3 (Calculated)

Optical Data of EmmonsiteHide

Type:
Biaxial (-)
RI values:
nα = 1.962 nβ = 2.090 nγ = 2.100 - 2.120
2V:
Measured: 23° , Calculated: 28° to 48°
Max Birefringence:
δ = 0.138 - 0.158
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
relatively strong r > v
Pleochroism:
Weak

Chemical Properties of EmmonsiteHide

Formula:
Fe3+2(TeO3)3 · 2H2O
IMA Formula:
Fe3+2(Te4+O3)3 · 2H2O

Crystallography of EmmonsiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.90(1) Å, b = 8.00(1) Å, c = 7.62(1) Å
α = 96.73°, β = 95°, γ = 84.47°
Ratio:
a:b:c = 0.988 : 1 : 0.953
Unit Cell V:
474.64 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Radially-configured or lichen-like groups of rough, acicular crystals; druses of thin scales; compact microcrystalline masses. Fibrous crusts with a small botryoidal surface to isolated globular aggregates.
Twinning:
Observed in microscopic crystals (Goldfield, Nevada).

Type Occurrence of EmmonsiteHide

Synonyms of EmmonsiteHide

Other Language Names for EmmonsiteHide

German:Emmonsit
Spanish:Emmonsita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Schmitterite14 photos of Emmonsite associated with Schmitterite on mindat.org.
Mackayite8 photos of Emmonsite associated with Mackayite on mindat.org.
Moctezumite6 photos of Emmonsite associated with Moctezumite on mindat.org.
Sonoraite5 photos of Emmonsite associated with Sonoraite on mindat.org.
Quartz5 photos of Emmonsite associated with Quartz on mindat.org.
Paratellurite3 photos of Emmonsite associated with Paratellurite on mindat.org.
Bromargyrite3 photos of Emmonsite associated with Bromargyrite on mindat.org.
Cuzticite2 photos of Emmonsite associated with Cuzticite on mindat.org.
Poughite2 photos of Emmonsite associated with Poughite on mindat.org.
Winstanleyite2 photos of Emmonsite associated with Winstanleyite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.JM.05KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2OHex.
4.JM.05KinichiliteMg0.5Mn2+Fe3+(Te4+O3)3 · 4.5H2OHex. 6/m : P63/m
4.JM.05ZemanniteMg0.5ZnFe3+(Te4+O3)3 · 4.5H2OHex. 6/m : P63/m
4.JM.10BlakeiteFe3+2[TeO3]3 (?)
4.JM.15GraemiteCu[TeO3] · H2OOrth. mmm (2/m 2/m 2/m) : Pmma
4.JM.20TeineiteCu2+(Te4+O3) · 2H2OOrth. mmm (2/m 2/m 2/m)

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

28.3.1BalyakiniteCu(TeO3)Orth.
28.3.2RajiteCu(Te4+2O5)Mon. 2/m : P21/b
28.3.3GraemiteCu[TeO3] · H2OOrth. mmm (2/m 2/m 2/m) : Pmma
28.3.4TeineiteCu2+(Te4+O3) · 2H2OOrth. mmm (2/m 2/m 2/m)
28.3.5CesbroniteCu5(TeO3)2(OH)6 · 2H2OOrth.
28.3.6MroseiteCaTe4+(CO3)O2Orth. mmm (2/m 2/m 2/m) : Pbca
28.3.7QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2yTrig. 3m (3 2/m) : P3m1
28.3.8ZemanniteMg0.5ZnFe3+(Te4+O3)3 · 4.5H2OHex. 6/m : P63/m
28.3.9KinichiliteMg0.5Mn2+Fe3+(Te4+O3)3 · 4.5H2OHex. 6/m : P63/m
28.3.10Denningite(Mn2+,Ca,Zn)Te4+2O5Tet.
28.3.11SpiroffiteMn2+2Te4+3O8Mon. 2/m : B2/b
28.3.12WinstanleyiteTiTe4+3O8Iso. m3 (2/m 3) : Ia3
28.3.13FairbankitePb(TeO3)Tric.
28.3.14PlumbotelluritePb(TeO3)Orth.
28.3.15Choloalite(Cu,Sb)3(Pb,Ca)3(TeO3)6Cl
28.3.16SmirniteBi2Te4+O5Orth. mm2
28.3.17ChekhovichiteBi2Te4+4O11Mon. 2/m
28.3.18Cliffordite(UO2)Te4+3O7Iso. m3 (2/m 3) : Pa3
28.3.19Schmitterite(UO2)(TeO3)Orth.
28.3.20MoctezumitePb(UO2)(TeO3)2Mon.
28.3.22BlakeiteFe3+2[TeO3]3 (?)
28.3.23MackayiteFe3+(Te4+2O5)(OH)Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
28.3.24PoughiteFe3+2(TeO3)2(SO4)(H2O)2 · H2OOrth.
28.3.25SonoraiteFe3+(TeO3)(OH) · H2OMon.
28.3.26RodalquilariteFe2(TeO2OH)3(TeO3)ClTric. 1 : P1
28.3.27EztlitePb2Fe3+6(Te4+O3)3(Te6+O6)(OH)10 · 8H2OMon.
28.3.28KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2OHex.

Other InformationHide

Notes:
Readily soluble in strong acids.
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 EmmonsiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hillebrand, W.F. (1885), Emmonsite, a ferric tellurite, Proceedings Colorado Sci. Soc.: 2: 20-23.
Dana and Wells (1890) American Journal of Science: 40: 78 (as Durdenite).
Schaller in: Hillebrand (1904) American Journal of Science: 18: 433
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 71.
Larsen, E.S. and Berman, H. (1934) The Microscopic Determination of the Nonopaque Minerals, Second edition, USGS Bulletin 848: 208.
Frondel, C. & F.H. Pough (1944): Two new tellurites of iron: Mackayite and blakeite, with new data on emmonsite and durdenite. American Mineralogist: 29: 211-225.
Mineralogical Record: 3: 82-84.
Proceedings of the Colorado Scientific Society: 2: 20-23.
Proceedings of the Colorado Scientific Society: 2: 45-46.
Tschermaks Mineralogische und Petrographische Mitteilungen: 18: 3, 157-168.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 640-641.

Internet Links for EmmonsiteHide

Localities for EmmonsiteHide

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

(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.
Australia
 
  • Western Australia
    • Kalgoorlie-Boulder Shire
      • Kalgoorlie-Boulder
http://www.portergeo.com.au/database/mineinfo.asp?mineid=mn082 / Spencer, L.J. (1903), Mineralogical Notes on Western Australian Tellurdies, Feb 1903, 13, pp268-290
Simpson, E.S. (1948), Minerals of Western Australia, Vol 2, pp 231, 1948
Simpson, E.S. (1948), Minerals of Western Australia, Vol 2, pp 231, 1948
Chile
 
  • Coquimbo Region
    • Elqui Province
      • El Indio deposit
Llaumet C./Henríquez F. (1976); "Faja de mineralización de oro, plata, cobre y arsenico en la Cordillera Andina de la III y IV región"; Primero Congreso Geológico Chileno, Vol. II.
        • Tambo Mine
[AmMin 85:1324]; http://www.lrz-muenchen.de/~mineralogische-sammlungen-dmg/analysen/winstanleyit.htm; Back, M.E., Grice, J.D., Gault, R.A., Criddle, A.J. & Mandarino, J.A. (1999): Walfordite, a new tellurite from the Wendy open pit, El Indio - Tambo mining property, Chile. Canadian Mineralogist 37, 1261-1268.
China
 
  • Hebei Province
    • Zhangjiakou Prefecture
      • Chongli Co.
Jiuling Li, Makovicky, E., Rose Hansen, J., Petersen, S.B., Feng Qi, Yanhe Cui, and Qingsheng Xu (2001): Geoscience 15(2), 189-196
Honduras
 
  • Francisco Morazán Department
    • Distrito Central
      • Tegucigalpa
        • Ojojona
Dana and Wells (1890) American Journal of Science: 40: 78; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 641.
Japan
 
  • Honshu Island
    • Chubu Region
      • Shizuoka Prefecture
        • Shimoda City
          • Rendaiji
Matsubara, S. (2002) The Mineral Species of Japan, 5th edition (Kobutsu Joho); Dr. Yohachiro Okamoto collection (conserved by the Geological Survey of Japan)
Mexico
 
  • Sonora
    • Mun. de Moctezuma
Lapis 2001(1), 11-40
Panczner(1987):108-336.
Lapis 2001(1), 11-40
Lapis 2001(1), 11-40
Spain
 
  • Andalusia
    • Almería
      • Níjar
        • Rodalquilar
Sierra, J., Leal, G., Pierrot, R., Laurent, Y., Protas, J. y Dusausoy,Y. (1968). La rodalquilarite, chlorotelurite de fer, une nouvelle espece minerale. Bulletin de la Societe Francaise de Mineralogie et Cristalographie, 91, 28-33.
USA
 
  • Arizona
    • Cochise Co.
      • Tombstone Hills
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 212, 389-390; Hillebrand, W.F. (1885), Emmonsite, a ferric tellurite, Proceedings Colorado Sci. Soc.: 2: 20-23; Williams, S.A. (1981b), Duhamelite, Cu4Pb2Bi(VO4)4(OH)3·8H2O, a new Arizona mineral, Mineralogical Magazine: 44: 151-152; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 67.
          • Contention-Grand Central Mine group
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 232.
www.azminerals.com
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 171; Williams, S.A. (1981a), Choloalite, CuPb(TeO3)2·H2O, a new mineral, Mineralogical Magazine: 44: 55-57.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 356, 375.
          • Silver Plume Mine (Emerald & Silver Plume Mine group)
Robert PECORINI collection
Hillebrand, W.F. (1885), Emmonsite, a ferric tellurite, Proceedings Colorado Sci. Soc.: 2: 20-23; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 641; Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 232.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 212, 281; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
  • California
Larsen, Esper Signius (1917), Durdenite from California: American Mineralogist: 2: 45-46; Larsen, Esper Signius (1921), The microscopic determination of nonopaque minerals: USGS Bulletin 679, 294 pp.: 71; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 174; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 303.
  • Colorado
    • Teller Co.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 641; O'Donoghue (1976) "Encyclopedia of Minerals & Gemstones", 286.
Min Rec 36:2 pp143-185
Min Rec 36:2 pp143-185
Min Rec 36:2 pp143-185; USGS Professional Paper 54
  • Nevada
    • Esmeralda Co.
      • Diamondfield District
NBMG Spec. Pub. 31 Minerals of Nevada
NBMG Spec. Pub. 31 Minerals of Nevada
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 641.
        • Goldfield
NBMG Spec. Pub. 31 Minerals of Nevada
NBMG Spec. Pub. 31 Minerals of Nevada
Rocks & Minerals, Nov. 1999
NBMG Spec. Pub. 31 Minerals of Nevada
    • Nye Co.
      • Halfpint Range
NBMG Spec. Pub. 31 Minerals of Nevada
  • New Mexico
    • Catron Co.
      • Wilcox District
        • Lone Pine Hill area
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
    • Grant Co.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 641; Mineralogical Record: 3(2): 82.
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
Minerals of New Mexico 3rd ed.
  • South Dakota
    • Lawrence Co.
      • Ruby Basin District
SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
      • Trojan District
R&M 75:3 pp 156-169
  • Utah
    • Juab Co.
      • East Tintic Mts
        • Tintic District
          • Mammoth
Collected and analyzed by John Dagenais
    • Utah Co.
      • East Tintic Mts
        • East Tintic District
XRD analzyed by Dr. Rob Bowell.
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