Zircon, Rutile, Xenotime-(Y), Monazite-(Ce), K Feldspar, Quartz, Molybdenite, Wulfenite

Specimen ID: 4QA-2UM

Mineral(s)
Zircon : Zr(SiO4)
Rutile : TiO2
Xenotime-(Y) : Y(PO4)
Monazite-(Ce) : Ce(PO4)
Quartz : SiO2
Wulfenite : Pb(MoO4)
Locality
As recorded:
Plaka Porphyry Deposit, Plaka, Lavrion District Mines, Lavreotiki, East Attica, Attica, Greece
Mindat locality:
Events

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Tiny rounded acute rhombohedra of plumbogummite on quartz. The bright phase on the left is molybdenite. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Tiny rounded acute rhombohedra of plumbogummite on quartz. The bright phase on the left is molybdenite. SEM micrograph (SE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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SEM micrograph (BSE mode) providing an overview of a polished section of a quartz sample with macroscopic molybdenite. One can see molybdenite (bright plates, appearing as elongate grains depending on how they were cut) and a small number of monazite-(Ce) grains (white), both in a layered matrix consisting of quartz (dark) and K-feldspar (dark grey). This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Deformed molybdenite aggregate in quartz. SEM micrograph (BSE mode). This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Deformed molybdenite aggregate in quartz. The low hardness of the molybdenite is clearly visible. SEM micrograph (SE mode). This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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"Lath"-shaped molybdenite crystals (bright) and a small, subhedral monazite-(Ce) crystal (white, lower left), K-feldspar and muscovite (both grey) and tiny rutile containing traces of W, V, Nb and Fe (bright grey, centre) in quartz (dark). This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Rutile grain with brighter areas that are characterised by elevated trace amounts of W, V, Nb and Fe. The matrix is quartz. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Rutile grains (grey) with small brighter areas that are characterised by elevated trace amounts of W, Nb and Fe. The bright elongate phase is platy molybdenite and the matrix consists of quartz (dark) and muscovite (bit brighter, irregular surface). SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Thorite as tiny grains (white) in a large monazite-(Ce) crystal that is slightly zoned (slightly brighter areas show elevated Th contents). Elongate molybdenite grain in the lower left. The matrix is quartz. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Several monazite-(Ce) crystals (white) and slightly bent molybdenite crystals (bright) in a quartz-muscovite-K-feldspar matrix. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Slightly zoned, subhedral monazite-(Ce) crystal (the slightly brighter areas are enriched in Ca and Th according to the typical substitution scheme REE3+ Ca2+ + Th4+) in quartz. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Several monazite-(Ce) crystals (white) and "books" of subparallel molybdenite platelets (bright) in a matrix consisting of quartz and hydrothermally corroded K-feldspar. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Xenotime-(Y) crystal (bright grey) associated with many monazite-(Ce) grains (bright), in a matrix of major quartz (dark) and minor K-feldspar (dark grey). SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Wulfenite (white) that contains many rounded monazite-(Ce) grains (grey) and, mainly in the area left and above the centre, plumbogummite (dark grey) rimming Sr- and Ca-bearing plumbogummite (dark), accompanied by bent molybdenite crystals (grey), all in quartz. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Small round aggregates of Ca- and Sr-rich plumbogummite (grey) rimmed by a thin overgrowth of purer plumbogummite (distinctly brighter), in quartz. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Large, slightly zoned K-feldspar grains (the slightly brighter areas contain traces of Ba) in quartz. The bright grain at the bottom is monazite-(Ce). Voids in the K-feldspar are filled with a kaolinite-group mineral (dark). SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Tiny, slightly zoned aeschynite-(Y) (?) (or polycrase?) crystal (more or less bright), grown on a slightly zoned rutile (dark grey; zoning due to Nb and W). Both are included in quartz (dark). SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Hinsdalite (bright grey) intergrown with slightly Pb-bearing jarosite (grey) and Sr-rich, Ce- and Ba-bearing crandallite (dark grey), in K-feldspar (dark). SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Sr-rich, Ce- and Ba-bearing crandallite (dark grey), intergrown with S-bearing plumbogummite (bright grey) and slightly Pb-bearing jarosite (grey), in K-feldspar. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. Crandallite is a new species for Lavrion; its description will be published in a future article on new finds from Lavrion. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 4th November 2018

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Hollow crystals of halite(!) (grey), accompanied by molybdenite (bright), in a void in quartz (dark). SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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Hollow crystals of halite(!) (grey), accompanied by molybdenite (grey, irregular surface), in a void in quartz (dark). SEM micrograph (SE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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Two euhedral, slightly zoned crystals of aeschynite-(Y) (?) (or polycrase?) (bright), next to a distinctly prismatic, slightly zoned (due to variable traces of Nb and W) rutile crystal, a euhedral zircon crystal (bright grey), in a quartz-K-feldspar matrix. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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Slightly zoned crystal of aeschynite-(Y) (?) (or polycrase?) (bright grey) with a darker core of an Fe-dominant Fe-Ti-Mo-Y-Nb-...-O phase, next to a slightly zoned (due to variable traces of Nb and W) rutile (grey), in a quartz-K-feldspar matrix. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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Monazite-(Ce) (bright grey) associated with wulfenite (white), in quartz (black). In the top right area, plumbogummite (grey) forms a thin rim around jarosite (very dark grey). SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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S-bearing plumbogummite (bright grey) is rimmed by Pb-bearing jarosite (grey), which in turn is rimmed by jarosite containing minor Pb and Al (darker grey), all in K-feldspar. The slightly darker matrix phase is quartz. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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Wulfenite (white) and Mo-bearing limonite (bright grey) forming thin encrustations around rutile grains (grey). The black phase is resin. The dark grey phase at the bottom is K-feldspar. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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Wulfenite (grey) and Mo-bearing limonite (darker grey) forming thin encrustations around rutile grains (dark grey). The black phase is resin. The dark grey phase at the bottom is K-feldspar. The high hardness of the rutile is evident by its strong relief. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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Wulfenite (white) and molybdenite (bright grey), in a muscovite-quartz matrix. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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Cracked grains of xenotime-(Y) in the centre and lower left corner (grey), intergrown with molybdenite (bright grey), next to wulfenite (white), in a matrix of quartz and muscovite. SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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Zoned xenotime-(Y) crystal (bright grey; the slightly brighter areas are slightly enriched in HREE), intergrown with monazite-(Ce) (bright), in a matrix of quartz (black) and K-feldspar (dark). SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018

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Tiny zircon inclusion (bright) in slightly zoned (due to variable traces of Nb) rutile. The matrix is quartz or K-feldspar (not recorded). SEM micrograph (BSE mode) of a polished section of a quartz sample with macroscopic molybdenite. This sample, which contains several primary phosphates, was briefly mentioned in: Rieck, B., Kolitsch, U., Voudouris, P., Giester, G., and Tzeferis, P. (2018) Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt, 29(5), 32-77 (in German).
Uwe Kolitsch - 5th November 2018
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