David K. Joyce Minerals

Grenville Minerals, Various Localities, Page Two

Here are some more unusual specimens from the Grenville Geological Province.

All prices in Canadian dollars. For payment in US$, deduct 22% or multiply by 0.78.

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

CorundumGrenville Minerals, Various Localities, Page Two
  • Item #17629
  • Corundum
  • 15.0x11.3x5.7 cm
  • Largest Crystal Size: 45mm
  • $75.00
  • Gutz Farm
  • Rosenthal
    Ontario, Canada
  • A fairly sharp, hexagonal, slightly tapered corundum crystal protrudes out of nepheline syenite along with a number of corundum crystal fragments. Excellent geological and mineralogical sample!
TremoliteGrenville Minerals, Various Localities, Page Two
  • Item #18240
  • Tremolite
  • 11.2x6.3x5.2 cm
  • Largest Crystal Size: 83mm
  • $75.00
  • Dancey Property
  • Haliburton Co.
    Ontario, Canada
  • A cluster of interlocking tremolite crystals from small acicular to large prismatic.
TremoliteGrenville Minerals, Various Localities, Page Two
  • Item #18250
  • Tremolite
  • 5.8x3.9x1.8 cm
  • Largest Crystal Size: 32mm
  • $50.00
  • Dancey Property
  • Haliburton Co.
    Ontario, Canada
  • A cluster of just barely green, end-member tremolite. Very nice!
TremoliteGrenville Minerals, Various Localities, Page Two
  • Item #18244
  • Tremolite
  • 4.3x1.4x1.1 cm
  • Largest Crystal Size: as above
  • $45.00
  • Dancey Property
  • Haliburton Co.
    Ontario, Canada
  • A highly lustrous, colourless, striated prismatic crystal with a poor termination. (they all have poor terminations from here) End member tremolite, for sure!
Pyroxene GroupGrenville Minerals, Various Localities, Page Two
  • Item #18207
  • Pyroxene Group
  • 5.5x4.8x3.5 cm
  • Largest Crystal Size: 20mm
  • $35.00
  • Miller Property
  • Eganville
    Ontario, Canada
  • Nice specimen of pyroxene from this modern classic locality.
Pyroxene GroupGrenville Minerals, Various Localities, Page Two
  • Item #18194
  • Pyroxene Group
  • 4.2x2.8x2.2 cm
  • Largest Crystal Size: 39mm
  • $35.00
  • Trapper's Trail
  • Haliburton
    Ontario, Canada
  • A sharp, well terminated pyroxene crystal with a fragment of the original calcite attached to the termination. The crystal has a crack down the middle but seems well held together.
TremoliteGrenville Minerals, Various Localities, Page Two
  • Item #18239
  • Tremolite
  • 8.7x6.2x4.8 cm
  • Largest Crystal Size: 15mm
  • $65.00
  • Dancey Property
  • Haliburton Co.
    Ontario, Canada
  • A plate of striated, not well terminated end-member tremolite crystals with very good prism faces.
PyroxeneGrenville Minerals, Various Localities, Page Two
  • Item #18198
  • Pyroxene
  • 6.0x6.1x5.8 cm
  • Largest Crystal Size: n/a
  • $50.00
  • Trapper's Trail
  • Haliburton
    Ontario, Canada
  • A larger, thick, terminated pyroxene crystal. The termination is coated with a white silica or sulphate mineral. Nice crystal!