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Magnolite

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About MagnoliteHide

09205580014946357822136.png
Mining map of the Magnolia District

Magnolia Mining District, Boulder Co., Colorado, USA
Formula:
[Hg2]2+[Te4+O3]
Colour:
Colorless, creamy white; also pale yellow green (Mountain Lion Mine).
Lustre:
Sub-Adamantine, Sub-Vitreous, Waxy, Greasy
Specific Gravity:
8.12 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in 1877 by Frederick Genth for the type location in the Magnolia district. Re-investigated by Roberts et al. (1989).
This page provides mineralogical data about Magnolite.


Classification of MagnoliteHide

Approved, 'Grandfathered' (first described prior to 1959)
4.JK.60

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
K : Tellurites without additional anions, without H2O
Dana 7th ed.:
34.1.8.1
34.1.7.1

34 : SELENITES, TELLURITES AND SULFITES
1 : A(XO3)

Pronounciation of MagnoliteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of MagnoliteHide

Sub-Adamantine, Sub-Vitreous, Waxy, Greasy
Transparency:
Transparent
Comment:
May be in silky in aggregates.
Colour:
Colorless, creamy white; also pale yellow green (Mountain Lion Mine).
Streak:
Colorless, also light brown (Mountain Lion Mine)
Comment:
Soft
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {001}
Good perpendicular to {001}
Density:
8.12 g/cm3 (Calculated)

Optical Data of MagnoliteHide

Type:
Biaxial (+)
Optical Extinction:
Parallel. Y=a, X=b,Z=c
Pleochroism:
Non-pleochroic
Comments:
n=>2, 2V => 45

Chemical Properties of MagnoliteHide

Formula:
[Hg2]2+[Te4+O3]
IMA Formula:
Hg1+2(Te4+O3)

Crystallography of MagnoliteHide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Cell Parameters:
a = 5.948(1) Å, b = 10.580(2) Å, c = 3.745(1) Å
Ratio:
a:b:c = 0.562 : 1 : 0.354
Unit Cell V:
235.67 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Bladed crystals, tufted aggregates.
Comment:
Roberts et al. (1989)

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005221MagnoliteGrice J D (1989) The crystal structure of magnolite, Hg2TeO3 The Canadian Mineralogist 27 133-1361989Mount Lion Mine, Colorado, USA0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.25 Å(50)
3.95 Å(70)
3.74 Å(40)
3.17 Å(30)
3.043 Å(100)
2.587 Å(50)
1.986 Å(40)
1.944 Å(35)
Comments:
Roberts et al. (1989)

Type Occurrence of MagnoliteHide

General Appearance of Type Material:
Colorless to needles or white laths on goethite on coloradoite ore.
Place of Conservation of Type Material:
Smithsonian Museum, Washington DC 165455
Geological Setting of Type Material:
A late alteration product or the weathdring zone of complex polymetallic mineral deposits.
Associated Minerals at Type Locality:

Other Language Names for MagnoliteHide

German:Magnolit
Spanish:Magnolita

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Magnolite associated with MercuryHg

Related Minerals - Nickel-Strunz GroupingHide

4.JK.05WinstanleyiteTiTe4+3O8Iso. m3 (2/m 3) : Ia3
4.JK.05Walfordite(Fe3+,Te6+)Te4+3O8Iso. m3 (2/m 3) : Ia3
4.JK.10SpiroffiteMn2+2Te4+3O8Mon. 2/m : B2/b
4.JK.10ZincospiroffiteZn2Te4+3O8Mon. 2/m
4.JK.15BalyakiniteCu(TeO3)Orth.
4.JK.20RajiteCu(Te4+2O5)Mon. 2/m : P21/b
4.JK.25CarlfriesiteCaTe4+2Te6+O8Mon. 2/m : B2/b
4.JK.30Denningite(Mn2+,Ca,Zn)Te4+2O5Tet.
4.JK.35ChekhovichiteBi2Te4+4O11Mon. 2/m
4.JK.40SmirniteBi2Te4+O5Orth. mm2
4.JK.45Choloalite(Cu,Sb)3(Pb,Ca)3(TeO3)6ClIso. 4 3 2 : P41 3 2
4.JK.50FairbankitePb2+12(Te4+O3)11(SO4)Tric.
4.JK.55PlumbotelluritePb(TeO3)Orth.
4.JK.65MoctezumitePb(UO2)(TeO3)2Mon.
4.JK.70Schmitterite(UO2)(TeO3)Orth.
4.JK.75Cliffordite(UO2)Te4+3O7Iso. m3 (2/m 3) : Pa3

Fluorescence of MagnoliteHide

Not fluorescent.

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.

References for MagnoliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Genth, F. A. (1878): On some tellurium and vanadium minerals. Proceedings of the American Philosophical Society 17, 113-123.
Roberts, A.C., Bonardi, M., Grice, J.D., Ercit, T.S., and Pinch, W.W. (1989): A restudy of magnolite, Hg1+2Te4+03, from Colorado. Canadian Mineralogist 27, 129-131.
Grice, J.D. (1989): The crystal structure of magnolite, Hg1+2Te4+03. Canadian Mineralogist 27, 133-136.
American Mineralogist (1990): 75: 437.

Internet Links for MagnoliteHide

Localities for MagnoliteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
USA (TL)
 
  • Colorado
    • Boulder Co.
      • Magnolia Mining District
Minerals of Colorado (1997) Eckel, E. B.
Minerals of Colorado (1997) Eckel, E. B.
    • La Plata Co.
      • La Plata Mining District (California Mining District)
M.E. Ciriotti, 2006, probed
 
Mineral and/or Locality  
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