David K. Joyce Minerals

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.

ForsteriteGrenville Minerals, Various Localities
  • Item #17740
  • Forsterite
  • 4.1x3.0x2.9 cm
  • Largest Crystal Size: 25mm
  • $65.00
  • Parker Mine
  • Notre Dame du Laus
    Quebec, Canada
  • An absolutely excellent well-formed crystal of forsterite sits atop a matrix of calcite and forsterite crystal sections. An excellent specimen of this variety of olivine. Displays perfectly.
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!
TremoliteGrenville Minerals, Various Localities
  • Item #17747
  • Tremolite
  • 10.5x9.7x4.7 cm
  • Largest Crystal Size: 50mm
  • $110.00
  • Harcourt Park Road
  • Wilberforce
    Ontario, Canada
  • A rather large terminated tremolite crystal sits atop massive tremolite and other smaller tremolite crystals. The crystals have a nice green colour and are striated. Stands perfectly for display, as shown.
FluorapatiteGrenville Minerals, Various Localities
  • Item #18871
  • Fluorapatite
  • 18.5x14.0x5.5 cm
  • Largest Crystal Size: 108m
  • $250.00
  • Yates Mine
  • Otter Lake
    Quebec, Canada
  • THIS is a nice, attractive specimen of two minerals that are renowned from the Yates mine fluorapatite in orange-pink calcite. A couple of pyroxene group crystal sections, as well. Iconic mineral specimen of the Grenville!
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.
TremoliteGrenville Minerals, Various Localities
  • Item #18267
  • Tremolite
  • 5.6x4.6x3.2 cm
  • Largest Crystal Size: 31mm
  • $35.00
  • Burleigh Road
  • Wilberforce
    Ontario, Canada
  • A specimen showing a large terminated, deep green, tremolite crystal, along with some smaller ones. A little calcite.
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 #17739
  • Tremolite
  • 5.2x3.1x3.0 cm
  • Largest Crystal Size: 30mm
  • $35.00
  • Miner's Bay
  • Minden Hills
    Ontario, Canada
  • A well shaped tremolite crystal sits atop some smaller tremolite crystals and massive tremolite. Nice example of this mineral.
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.
Titanite, AnataseGrenville Minerals, Various Localities
  • Item #18243
  • Titanite, Anatase
  • 4.0x3.1x1.7 cm
  • Largest Crystal Size: as above
  • $75.00
  • Cardiff Uranium Mine
  • Wilberforce
    Canada
  • This is an interesting one! This was once a titanite crystal but the outer shell of it has been altered to anatase. You can see from the broken places that the core is dark brown titanite and the outer shell is a lighter-coloured anatase. A little purple fluorite attached. Classic.
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!
MolybdeniteGrenville Minerals, Various Localities
  • Item #19147
  • Molybdenite
  • 3.5x2.7x1.9 cm
  • Largest Crystal Size: 10mm
  • $35.00
  • Aldfield
    Quebec, Canada
  • A prismatic crystal and a tabular, molybdenite crystal in peridotite matrix from this old classic locality.
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!
BruciteGrenville Minerals, Various Localities
  • Item #19364
  • Brucite
  • 7.1x4.6x2.6 cm
  • Largest Crystal Size: 50mm wide cleavages
  • $40.00
  • Pinchin Quarry
  • Malone
    Ontario, Canada
  • A partial vein of light bluish, clear brucite cleavages. Very nice example of this mineral!
BruciteGrenville Minerals, Various Localities
  • Item #19370
  • Brucite
  • 6.9x5.2x3.2 cm
  • Largest Crystal Size: 50mm cleavages
  • $65.00
  • Pinchin Quarry
  • Malone
    Ontario, Canada
  • A rich specimen showing broad, clear, bluish cleavages of brucite. Very good example!
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.
MagnetiteGrenville Minerals, Various Localities
  • Item #20152
  • Magnetite
  • 8.0x6.0x5.4 cm
  • Largest Crystal Size: 35mm
  • $120.00
  • Bentley Lake, (Faraday Mine Property)
  • Bancroft
    Ontario, Canada
  • A cluster of sharp magnetite octahedral from the Bentley Lake occurrence, on the Faraday Mine property. These are not FROM the mine but away from the mine in veins that outcrop on surface. Collected many years ago and comes with a George and Susan Robinson label, from the days long ago when they were mineral dealers. One of the magnetite crystals is incomplete but the rest are sharp. Displays very well for a black mineral!
TremoliteGrenville Minerals, Various Localities
  • Item #20158
  • Tremolite
  • 7.4x5.7x5.3 cm
  • Largest Crystal Size: 40mm
  • $35.00
  • Harcourt Park Road
  • Wilberforce
    Ontario, Canada
  • A rich, deep green jumble of terminated tremolite crystals. Classic Grenville.
AllaniteGrenville Minerals, Various Localities
  • Item #20203
  • Allanite
  • 10.0x5.3x4.3 cm
  • Largest Crystal Size: 15mm
  • $110.00
  • Craigmont Corundum Mine
  • Craigmont
    Ontario, Canada
  • Not only corundum occurred at the Craigmont Mine, once the "largest corundum mine in the British Commonwealth". A number of other minerals were found there during mining operations. Here is a nice allanite specimen, showing sharp, bladed crystals of this mineral. Very unusual.
Cancrinite, SodaliteGrenville Minerals, Various Localities
  • Item #20178
  • Cancrinite, Sodalite
  • 6.4x6.4x2.5 cm
  • Largest Crystal Size: n/a
  • $70.00
  • Blue Mountian Quarry
  • Methuen Twp., Peterborough Co.
    Ontario, Canada
  • A rich specimen showing both deep orangey-yellow cancrinite and deep blue sodalite from this large nepheline syenite mining operation. Mined many years ago and from an old collection.