David K. Joyce

Grenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite

The occurrences at Gibson Road East are a continuation of the calcite vein-dyke trend that we used to collect at the "Bear Lake Diggings". The mineralization and mode of occurrence is similar; calcite vein-dykes with fluorapatite in the calcite and the other minerals mostly occurring on the wall rock of the contact between the vein dykes and the country rock. There are lots of places to look on the Crown Land in the area. Here are some nice examples.

All prices in Canadian dollars. For payment in US$, deduct 21% or multiply by 0.79.

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

TitaniteGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24428
  • Titanite
  • 6.3x4.3x3.1 cm
  • Largest Crystal Size: 10mm
  • $40.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • A lustrous, deep brown titanite crystal is nicely situated in an area between microcline crystals on this piece. Turn it over and there is just as nice of a titanite, plus a couple of smaller ones, between the backsides of the same microcline crystals.
MicroclineGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24430
  • Microcline
  • 7.8x6.2x4.1 cm
  • Largest Crystal Size: t-19mm
  • $40.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • This specimen shows a very nice, lustrous, well formed titanite crystal perched atop a cluster of not-so-great microcline crystals, mostly contacted. Still the titanite is highly lustrous with the typical dark brown colouration and wedge-shape. Looks good!
PhlogopiteGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24432
  • Phlogopite
  • 11.5x10.3x5.9 cm
  • Largest Crystal Size: as above
  • $65.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • A rather large, well formed, prismatic crystal of phlogopite. The crystal faces of the prism form are particularly well formed and wonderfully offset to make an impressive specimen! Displays as shown.
Titanite, Microcline, KatophoriteGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24436
  • Titanite, Microcline, Katophorite
  • 5.2x5.2x3.2 cm
  • Largest Crystal Size: t-16mm, mic-32mm, kat-6mm
  • $40.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • This cluster has one larger, razor-sharp titanite crystalon microcline crystals and a few smaller ones associated with small katophorite crystals. The titanite has part-matte and part lustrous crystal faces. Looks good!
Titanite, Microcline, KatophoriteGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24437
  • Titanite, Microcline, Katophorite
  • 8.7x7.5x4.4 cm
  • Largest Crystal Size: 20mm
  • $40.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • There are a couple of well-formed titanite crystals on top of this mish-mash of otherwise poorly formed microcline, katophorite and fluorapatite crystals. The titanite crystals have excellent lustre and sharp forms.
PhlogopiteGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24438
  • Phlogopite
  • 9.8x7.0x4.5 cm
  • Largest Crystal Size: as above
  • $85.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • A sharp, hexagonal-outlined phlogopite crystal, almost totally terminated. A lttle bit of the termination of the crystal has been lost off of the lower front, as you can see in the picture. Still, it is an excellent example of this type of mica. Shows perfectly!
MicroclineGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24443
  • Microcline
  • 9.0x8.3x5.3 cm
  • Largest Crystal Size: 62mm
  • $50.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • A cluster of sharp microcline crystals from a calcite vein on Gibson Road East near Tory Hill. Original patina. Displays well!
Fluoro-richteriteGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24452
  • Fluoro-richterite
  • 5.2x3.0x2.7 cm
  • Largest Crystal Size: as above
  • $35.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • A nice twin crystal of this amphibole group mineral. Nice re-entrant angle!
Fluoro-richteriteGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24453
  • Fluoro-richterite
  • 19.3x10.5x6.0 cm
  • Largest Crystal Size: 60mm
  • $140.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • A large cluster of very lustrous, pitch-black fluoro-richterite crystals with some fluorapatite on the base. This piece was chiseled from the wall rock of a calcite vein-dyke.
Fluoro-richteriteGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24455
  • Fluoro-richterite
  • 6.4x2.7x1.9 cm
  • Largest Crystal Size: as above
  • $40.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • A twinned crystal of fluoro-richterite showing very sharp prism faces and relatively incoherent terminal faces, although it is doubly terminated. the twinning re-entrant angles easy to see on the prism faces.
Fluoro-richterite, CalciteGrenville, Gibson Road East, Titanite, Microcline, Fluorapatite, Phlogopite
  • Item #24456
  • Fluoro-richterite, Calcite
  • 13.2x7.8x4.9 cm
  • Largest Crystal Size: 132mm
  • $85.00
  • Gibson Road East
  • Tory Hill
    Ontario, Canada
  • A rather large, twinned fluororichterite crystal wit hcalcite still attached. The prism faces are fairly good but the terminal faces are fairly etched and rounded. Still a great looking and instructive amphibole specimen!