David K. Joyce

Grenville Minerals, Various Localities

The Central Metasedimetary Belt of the Grenville Geological Province is famous for large, well formed crystals of apatite, amphiboles, titanite, zircon, etc. I live very close to one of the more productive areas of the Grenville and am happt you present to you these very nice specimens of those sorts of minerals. Here are some:

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.

Pyroxene GroupGrenville Minerals, Various Localities
  • Item #18255
  • Pyroxene Group
  • 4.7x2.0x1.8 cm
  • Largest Crystal Size: 47mm
  • $35.00
  • Trapper's Trail
  • Haliburton Co.
    Ontario, Canada
  • A nice, singly terminated crystal with a small attached crystal on one side. Nice!
TremoliteGrenville Minerals, Various Localities
  • Item #7502
  • Tremolite
  • 4.5x1.2x0.8 cm
  • Largest Crystal Size: as above
  • $35.00
  • Miners Bay

  • Ontario, Canada
  • A slender, lustrous, dark green crystal of actinolite with a nice termination. The crystal seems to be slightly offset which gives it a curved appearance. Nice!
RutileGrenville Minerals, Various Localities
  • Item #18883
  • Rutile
  • 12.6x6.0x2.9 cm
  • Largest Crystal Size: 42mm
  • $65.00
  • Templeton township
    Quebec, Canada
  • This is an old classic, Grenville locality with a vague name. Old collections have these "Templeton Township" specimens of rutile in calcite associated with aegirine crystals. Long, somewhat curved, elongated crystals/ Excellent!
TourmalineGrenville Minerals, Various Localities
  • Item #9959
  • Tourmaline
  • 6.4x5.8x5.7 cm
  • Largest Crystal Size: 8mm
  • $40.00
  • Tulip Valley

  • Quebec, Canada
  • Lots of brilliantly lustrous, black tourmaline crystals are scattered around amongst light green, rounded pyroxene crystals. Striking, really. Unusual locality.
Spessartine, MuscoviteGrenville Minerals, Various Localities
  • Item #12138
  • Spessartine, Muscovite
  • 5.2x3.0x0.3 cm
  • Largest Crystal Size: s-4.5mm
  • $35.00
  • Villeneuve Mine
  • 31-I Villeneuve Township, Papineau Co.
    Quebec, Canada
  • Interesting specimen showing a spessartine crystal, flattened in and between sheets of biotite.
Spessartine, MuscoviteGrenville Minerals, Various Localities
  • Item #12144
  • Spessartine, Muscovite
  • 8.3x5.1x0.3 cm
  • Largest Crystal Size: s-5mm
  • $75.00
  • Villeneuve Mine
  • 31-I Villeneuve Township, Papineau Co.
    Quebec, Canada
  • Four, sharp, flattened crystals of gemmy red spessartine are embedded in this "book" of mica. If you hold it to the light, you can see that the garnets go right through the mica(Of course you can see them on the other side too!). An attractive, interesting specimen from this large pegmatite deposit.
Spessartine, MuscoviteGrenville Minerals, Various Localities
  • Item #12147
  • Spessartine, Muscovite
  • 11.5x8.2x0.2 cm
  • Largest Crystal Size: 5mm
  • $60.00
  • Villeneuve Mine
  • 31-I Villeneuve Township, Papineau Co.
    Ontario, Canada
  • A single ruby-red spessartine crystal is embedded in this muscovite crystal. The spessartine crystal can be seen on both sides of the mica. Very good specimen from this large pegmatite deposit.
TremoliteGrenville Minerals, Various Localities
  • Item #18245
  • Tremolite
  • 4.8x3.6x2.4 cm
  • Largest Crystal Size: as above
  • $65.00
  • Dancey Property
  • Haliburton Co.
    Ontario, Canada
  • A very nice, deeply striated, highly lustrous, end-member tremolite crystal with a smaller crystal attached. These crystals do not have sharp terminations but do have excellent prism faces. Fairly gemmy with a very slight greenish colouration.
TremoliteGrenville Minerals, Various Localities
  • Item #18188
  • Tremolite
  • 4.1x4.3x1.9 cm
  • Largest Crystal Size: n/a
  • $40.00
  • Miner's Bay

  • Ontario, Canada
  • A very sharp, dark green, excellent prism of tremolite with poor terminations.
Calcite, MarcasiteGrenville Minerals, Various Localities
  • Item #17706
  • Calcite, Marcasite
  • 6.0x4.0x3.3 cm
  • Largest Crystal Size: as above
  • $60.00
  • Canada Talc Mine, Dolomite Pit
  • Madoc
    Ontario, Canada
  • A rather large (for the locality), twinned calcite crystal with no matrix. The crystals is lustrous, shows the rhombohedron form, predominately and has tiny specks of marcasite crystals just under the surface of the crystal. Some bruising on the sides. Displays very well.
DiopsideGrenville Minerals, Various Localities
  • Item #15503
  • Diopside
  • 5.8x5.5x2.4 cm
  • Largest Crystal Size: 27mm
  • $40.00
  • Dog Lake
  • nr. Battersea
    Ontario, Canada
  • Several, sharp diopside crystals are perfectly exposed on this calcite matrix. The crystals are all sharp but to some extent hoppered. They are a light green colour with a thin talc alteration veneer. Nice specimen!
PyroxeneGrenville Minerals, Various Localities
  • Item #15655
  • Pyroxene
  • 6.7x3.6x2.9 cm
  • Largest Crystal Size: as above.
  • $45.00
  • Lot 13, Rang 15, Canton de Hull
  • Gatineau
    Quebec, Canada
  • A very light coloured, well formed pyroxene group crystal. The crystal is square in cross section with beveled sides and a very good termination. An old classic.
CalciteGrenville Minerals, Various Localities
  • Item #16175
  • Calcite
  • 5.2x3.7x3.4 cm
  • Largest Crystal Size: 27mm
  • $75.00
  • Lyndhurst

  • Ontario, Canada
  • A lovely cluster of calcite crystals from this famous old locality. Back in the 30/40's, a Quartz mine was operated just outside of Lyndhurst, for quartz crystals. The quartz crystals were used for electronic purposes. On occasion, very nice calcite crystals, striped with red hematite and with tiny marcasite inclusions accompanied the quartz in the vugs. Here is a nice example!
Amphibole GroupGrenville Minerals, Various Localities
  • Item #18193
  • Amphibole Group
  • 5.3x3.3x2.2 cm
  • Largest Crystal Size: 27mm
  • $40.00
  • Trapper's Trail
  • Haliburton
    Ontario, Canada
  • A couple of very sharp amphibole crystals propped up by a pyroxene crystal fragment. Very nice!
FluorapatiteGrenville Minerals, Various Localities
  • Item #16952
  • Fluorapatite
  • 6.8x5.0x3.1 cm
  • Largest Crystal Size: 28mm
  • $35.00
  • Canoe Lake
  • Bedford Township
    Ontario, Canada
  • A couple of blue fluorapatite crystals are embedded in this white, granular calcite matrix. Classic Grenville location!
FluororichteriteGrenville Minerals, Various Localities
  • Item #19725
  • Fluororichterite
  • 9.5x5.3x3.6 cm
  • Largest Crystal Size: 79mm
  • $45.00
  • George Earle Farm
  • Wilberforce
    Ontario, Canada
  • A nice, black, prismatic, crystal of this unusual amphibole group mineral. It is doubly terminated but the terminations are sort of multiple. Sits naturally like in the picture. With a stand would look great vertically, as well. Nice specimen!
TremoliteGrenville Minerals, Various Localities
  • Item #19914
  • Tremolite
  • 4.2x4.1x2.2 cm
  • Largest Crystal Size: 18mm
  • $40.00
  • Essonville Line
  • Wilberforce
    Ontario, Canada
  • This specimen shows a number of sharp tremolite crystals but one in particular, nicely exposed. Unusual, old locality.
ScapoliteGrenville Minerals, Various Localities
  • Item #20706
  • Scapolite
  • 15.1x6.8x4.6 cm
  • Largest Crystal Size: 87mm
  • $130.00
  • Gatineau

  • Quebec, Canada
  • A large, long scapolite crystal with some calcite attached. The termination is very good and exhibits tetragonal symmetry very well. Some areas of the outer surface of the scapolite crystal show a very thin alteration to biotite, in a patchwork. Really nice crystal!
Microcline, AegirineGrenville Minerals, Various Localities
  • Item #21215
  • Microcline, Aegirine
  • 12.0x10.3x8.2 cm
  • Largest Crystal Size: Ae-70mm, m-11.2
  • $130.00
  • Girardville

  • Quebec, Canada
  • A very large, well formed microcline crystal, tinted hematite-red by... a little hematite with a crown of lustrous, dark green, aegirine crystals sections. Impressive piece! Displays very well!
Microcline, AegirineGrenville Minerals, Various Localities
  • Item #21216
  • Microcline, Aegirine
  • 5.5x4.0x2.7 cm
  • Largest Crystal Size: ae-5.1, m-4.2
  • $55.00
  • Girardville

  • Quebec, Canada
  • A very sharp, well terminated microcline crystal with some dark-green, aegirine prism sections attached. Sits perfectly!
Aegirine, MicroclineGrenville Minerals, Various Localities
  • Item #21218
  • Aegirine, Microcline
  • 9.8x4.0x2.2 cm
  • Largest Crystal Size: 73mm
  • $65.00
  • Girardville

  • Quebec, Canada
  • This specimen is primarily a cluster of dark green aegirine crystal sections with a microcline crystal section attached. Good looking interesting specimen of this pyroxene mineral.
PhlogopiteGrenville Minerals, Various Localities
  • Item #21572
  • Phlogopite
  • 8.0x6.2x5.8 cm
  • Largest Crystal Size: 57mm
  • $40.00
  • Lac McGregor

  • Quebec, Canada
  • Actually a nice cluster of phlogopite crystals that has weathered naturally out of calcite. The termination of the middle crystal is intact with a couple of smaller, tabular crystal on top of it. Looks good!