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Mathesiusite

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About MathesiusiteHide

Johannes Mathesius
Formula:
K5(UO2)4(SO4)4(VO5)·4H2O
Colour:
Yellowish green
Lustre:
Vitreous
Hardness:
2
Specific Gravity:
4.02 (Calculated)
Crystal System:
Tetragonal
Name:
Named in honor of Johannes Mathesius (24 June 1504, Rochlitz, Saxony – 7 October 1565, St. Joachimsthal, Bohemia), a Lutheran parson and humanist. He was also an "amateur mineralogist" and a friend of Georg Agricola, "the father of mineralogy". They both lived in St. Joachimsthal (now Jáchymov).
This page provides mineralogical data about Mathesiusite.


Classification of MathesiusiteHide

Approved
Approval Year:
2013
First Published:
2014

Physical Properties of MathesiusiteHide

Vitreous
Colour:
Yellowish green
Comment:
Colorless in fragments
Streak:
Greenish white
Hardness:
Comment:
~2
Tenacity:
Brittle
Cleavage:
Perfect
Perfect cleavage on {110} and weaker on {001}
Fracture:
Irregular/Uneven
Density:
4.02 g/cm3 (Calculated)

Optical Data of MathesiusiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.634() nε = 1.597(3)
Max Birefringence:
δ = 0.037
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of MathesiusiteHide

Formula:
K5(UO2)4(SO4)4(VO5)·4H2O
IMA Formula:
K5(UO2)4(SO4)4(VO5)(H2O)4

Crystallography of MathesiusiteHide

Crystal System:
Tetragonal
Class (H-M):
4/m - Dipyramidal
Space Group:
P4/n
Setting:
P4/n
Cell Parameters:
a = 14.9704(10) Å, c = 6.8170(5) Å
Ratio:
a:c = 1 : 0.455
Unit Cell V:
1527.78 ų
Z:
2
Morphology:
Acicular aggregates of prismatic crystals up to ~200 μm long and several micrometers thick.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.599(100)
6.907(41)
6.270(5)
5.295(32)
4.760(2)
4.739(12)
3.351(2)
3.216(2)
Comments:
From Type Description.

Type Occurrence of MathesiusiteHide

General Appearance of Type Material:
A secondary mineral formed during post-mining processes, found on fractures of gangue.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Department of Mineralogy and Petrology of the National Museum in Prague, Prague, Czech Republic, catalogue number P1P 7/2013
Associated Minerals at Type Locality:

Synonyms of MathesiusiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Adolfpateraite1 photo of Mathesiusite associated with Adolfpateraite on mindat.org.

Fluorescence of MathesiusiteHide

Strong yellowish green under long and short wave UV

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 MathesiusiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Plášil, J., Veselovský , F., Hloušek, J., Škoda, R., Novák, M., Sejkora, J., Čejka, J., Škácha, P. and Kasatkin, A.V. (2013) Mathesiusite, IMA 2013-046. CNMNC Newsletter No. 17, October 2013, page 3001; Mineralogical Magazine, 77, 2997-3005.
Plášil, J., Veselovský, F., Hloušek, J., Škoda, R., Novák, M., Sejkora, J., Čejka, J., Škácha, P., Kasatkin, A.V. (2014): Mathesiusite, K5(UO2)4(SO4)4(VO5)(H2O)4, a new uranyl vanadate-sulfate from Jáchymov, Czech Republic. American Mineralogist, 99, 625-632.

Internet Links for MathesiusiteHide

Localities for MathesiusiteHide

ⓘ - 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.
Czech Republic (TL)
 
  • Karlovy Vary Region
    • Krušné Hory Mts (Erzgebirge)
      • Jáchymov District (St Joachimsthal)
        • Jáchymov (St Joachimsthal)
          • Svornost Mine (Einigkeit Mine)
Plášil, J., Veselovský , F., Hloušek, J., Škoda, R., Novák, M., Sejkora, J., Čejka, J., Škácha, P. and Kasatkin, A.V. (2013) Mathesiusite, IMA 2013-046. CNMNC Newsletter No. 17, October 2013, page 3001; Mineralogical Magazine, 77, 2997-3005.;Plášil, J., Veselovský, F., Hloušek, J., Škoda, R., Novák, M., Sejkora, J., Čejka, J., Škácha, P., Kasatkin, A.V. (2014): Mathesiusite, K5(UO2)4(SO4)4(VO5)(H2O)4, a new uranyl vanadate-sulfate from Jáchymov, Czech Republic. American Mineralogist, 99, 625-632.
Mineral and/or Locality  
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