David K. Joyce Minerals

Mont Saint-Hilaire, Thomasclarkite, Oneillite

Here are some very good specimens of these unusual minerals.

All prices in Canadian dollars. For payment in US$, deduct 19% or multiply by 0.81.

Click on any of the following thumbnails to view a larger image of the specimen.

Thomasclarkite, ZirconMont Saint-Hilaire, Thomasclarkite, Oneillite
  • Item #14545
  • Thomasclarkite, Zircon
  • 2.5cm across cm
  • Largest Crystal Size: micro
  • $75.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • Three clusters of light yellow thomasclarkite crystals on this specimen, associated with sharp, beige zircon crystals, brown siderite and a couple of very nice petersenite crystals.
Thomasclarkite-(Y)Mont Saint-Hilaire, Thomasclarkite, Oneillite
  • Item #14692
  • Thomasclarkite-(Y)
  • 5.7x4.5x2.6 cm
  • Largest Crystal Size: micro
  • $70.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • A really well formed, excellent crystal of thomasclarkite-(Y) is tucked away safely in a vug in pegmatite. Really good!
Thomasclarkite-(Y)Mont Saint-Hilaire, Thomasclarkite, Oneillite
  • Item #14684
  • Thomasclarkite-(Y)
  • 4.8x3.4x2.1 cm
  • Largest Crystal Size: micro
  • $65.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • Really sharp, deep yellow crystal of thomasclarkite is perfectly exposed in this shallow vug in pegmatite. Looks better in person.
Thomasclarkite-(Y), GaidonnayiteMont Saint-Hilaire, Thomasclarkite, Oneillite
  • Item #14693
  • Thomasclarkite-(Y), Gaidonnayite
  • 5.4x3.2x2.0 cm
  • Largest Crystal Size: micro
  • $75.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • At least two sharp, yellow thomasclarkite crystals on this specimen, along with clusters of colourless gaidonnayite and other interesting minerals.