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 19% or multiply by 0.81.

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!
RutileGrenville Minerals, Various Localities, Page Two
  • Item #18884
  • Rutile
  • 7.1x4.8x3.2 cm
  • Largest Crystal Size: 29mm
  • $75.00
  • Templeton Township
    Quebec, Canada
  • A specimen of rutile in calcite from this classic old Grenville locality. This place is famous for very elongated rutile crystals in calcite!
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.
FluororichteriteGrenville Minerals, Various Localities, Page Two
  • Item #19143
  • Fluororichterite
  • 10.8x9.5x7.6 cm
  • Largest Crystal Size: 84mm
  • $150.00
  • Earl Farm
  • Wilberforce
    Ontario, Canada
  • A classic Grenvillian specimen showing sharp fluoro-richterite crystals, a rare qamphibole mineral, embedded in white calcite. Sits perfectly for display.
TremoliteGrenville Minerals, Various Localities, Page Two
  • Item #20150
  • Tremolite
  • 9.0x7.4x5.8 cm
  • Largest Crystal Size: 42mm
  • $65.00
  • Irondale
    Ontario, Canada
  • Completely colourless, iron free, end member tremolite. Few of the crystals are terminated and when they are, the terminations are feathered. Looks good and displays well!
Calcite, PyriteGrenville Minerals, Various Localities, Page Two
  • Item #20155
  • Calcite, Pyrite
  • 4.7x3.6x3.4 cm
  • Largest Crystal Size: 30mm
  • $120.00
  • Lyndhurst
  • Leeds Township
    Ontario, Canada
  • Wow! THIS is a nice calcite specimen! The nice forms, hematite zoning, pyrite sprinkles and historic, classic location make it extra special. This location was mined for electronic-grade quartz crystals during the second world war and they also came across these excellent calcite clusters, as well. Looks fantastic!
Titanite, MagnetiteGrenville Minerals, Various Localities, Page Two
  • Item #20157
  • Titanite, Magnetite
  • 7.8x9.5x7.5 cm
  • Largest Crystal Size: t-10mm
  • $120.00
  • New York Mine
  • Glamorgan Township
    Ontario, Canada
  • This is an interesting piece! Sharp, lustrous titanite crystals almost totally cover magnetite crystals and, I expect, were derived from the magnetite which presumably titaniferous! A little bit of a magnetite crystal is exposed on one side. Lots of elongated fluorapatite crystal sections are embedded in the titanite and magnetite. Fine looking specimen of an unusual association.
ZirconGrenville Minerals, Various Localities, Page Two
  • Item #20208
  • Zircon
  • 4.6x2.5x2.5 cm
  • Largest Crystal Size: 29mm
  • $140.00
  • Donaldson Lake

  • Quebec, Canada
  • A very nice specimen showing n elongated, doubly terminated zircon crystal embedded in pyroxene and, possibly, scapolite. These types of specimens are typical of the Grenville pyroxene-calcite vein dykes of that area of the Grenville. Hard to come by! VERY difficult to personally collect.
ZirconGrenville Minerals, Various Localities, Page Two
  • Item #20213
  • Zircon
  • 3.5x1.8x1.8 cm
  • Largest Crystal Size: 11mm
  • $40.00
  • Saranc Zircon Mine
  • Tory Hill
    Ontario, Canada
  • A very nice example of a zircon crystal from the Saranac "Mine". It really was not a mine but was a prospect, interesting because of radioactivity there. Nice!