Here are some more unusual specimens from the Grenville Geological Province.
All prices in Canadian dollars. For payment in US$, deduct 18% or multiply by 0.82.
Click on any of the following thumbnails to view a larger image of the specimen.
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- Item #17629
- Corundum
- 15.0x11.3x5.7
cm
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Largest Crystal Size: 45mm
-
$65.00
- 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!
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- 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.
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- Item #28672
- Titanite, Microcline
- 5.2x2.1x2.4
cm
-
Largest Crystal Size: 14mm
-
$40.00
- Titanite Hill
- Tory Hill
Canada
- A sharp, dark-brown, wedge-shaped titanite crystal is perfectly situated on an elongated microcline crystal.
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- Item #20155
- Calcite, Pyrite
- 4.7x3.6x3.4
cm
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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!
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- Item #29263
- Zircon
- 9.0x6.0x5.2
cm
-
Largest Crystal Size: 6mm
-
$45.00
- Keuhl Lake
- Brudenell Township
Ontario,
Canada
- A 6mm, sharp zircon crystal is well exposed in this cavity in feldspar. Keuhl Lake is one of the more famous localities for zircon crystals, in the world.
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- Item #22105
- Nepheline
- 13.5x10.0x7.3
cm
-
Largest Crystal Size: 45mm
-
$80.00
- Davis Hill
- Bancroft
Ontario,
Canada
- This fragment of massive nepheline syenite has one side covered with crystals of nepheline. The crystals are hexagonal prisms with pinacoidal terminations. This is the classic nepheline occurrence in the Grenville Geological Province.
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- Item #22281
- Dravite, Tremolite
- 5.5x5.5x2.4
cm
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Largest Crystal Size: Dr 40mm, Tr 8mm
-
$45.00
- Bancroft
Ontario,
Canada
- I obtained this specimen years ago from an old collection. It shows a large crystal of tremolite associated with pitch-black crystals of dravite. It is not from Tait Farm but one of the smaller, obscure locations just south of Bancroft. Old label accompanies it.
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- Item #24539
- Dravite
- 6.4x3.6x3.2
cm
-
Largest Crystal Size: 13mm
-
$55.00
- Goshen
Ontario,
Canada
- A number of dark-brown dravite crystals are exposed in pure-white calcite cleavages on a phlogopite mica matrix. Nice specimen from an unusual Grenville location! s
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- Item #24669
- Andradite, Grossular
- 13.0x5.9x5.5
cm
-
Largest Crystal Size: 9mm
-
$45.00
- Marmoraton Mine
- Marmora
Ontario,
Canada
- Nice example of the garnets from the gigantic skarn zone that is/was the Marmoraton Iron Mine. The mine was a very large open pit that has now been closed for decades. Some feldspar crystals associated. Nice! s
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- Item #24735
- Muscovite, Tremolite
- 6.9x3.8x4.7
cm
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Largest Crystal Size: 36mm
-
$40.00
- Calumet Island
- Pontiac County
Quebec,
Canada
- Interesting, twinned muscovite crystals nicely exposed in white marble matrix. The crystals resemble a Mercedes-Benz symbol. Unusual crystallization.
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- Item #24739
- Muscovite, Tremolite
- 14.1x6.5x5.1
cm
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Largest Crystal Size: Mu 40mm
-
$65.00
- Calumet Island
- Pontiac County
Quebec,
Canada
- This specimen shows a number of "hockey stick"-like twinned crystals of muscovite embedded in but nicely exposed in/on white calcite-tremolite marble. twinning like this is not often seen in muscovite.
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- Item #24741
- Schorl
- 11.1x5.2x5.5
cm
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Largest Crystal Size: 30mm
-
$65.00
- Calumet Island
- Pontiac County
Ontario,
Canada
- Terminated crystals of schorl are nicely exposed on white marble in this specimen. One particular crystal is dominant. Interesting piece from an unusual locality!
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- Item #24747
- Stilbite
- 6.9x 5.2x3.8
cm
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Largest Crystal Size: 2mm
-
$55.00
- Strain Lake, HWY 41, nr. Khartoum, Griffith TWP.
- Renfrew County
Ontario,
Canada
- A vug of stilbite crystals from the Grenville! These crystals were precipitated from low temperature hydrothermal solutions that broke down older silicates in the surrounding rocks. Unusual!
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- Item #24786
- Tremolite
- 8.8x5.9x4.0
cm
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Largest Crystal Size: n/a
-
$40.00
- H&H Quarry, Haley Sta., Ross TWP
- Renfrew County
Ontario,
Canada
- Very colourless, tightly packed tremolite crystals. Tremolite usually has a green tint due to iron content. If iron content is high enough, the tremolite transitions to the actiolite end of the tremolite-actinolite series. This is pure end-member tremolite!
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- Item #24897
- Rutile
- 3.5x2.4x1.7
cm
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Largest Crystal Size: 18mm
-
$45.00
- MacGregor Lake
- Templeton Township
Quebec,
Canada
- This is the premier rutile locality in the Grenville and has produced many striated, twinned and untwinned rutile crystals. Here is a nice example!
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- Item #24915
- Dravite
- 5.1x4.4x3.5
cm
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Largest Crystal Size: 16mm
-
$40.00
- West Pierrepont
- St. Lawrence Co.
New York,
USA
- A couple of black dravite crystals are partially embedded in a matrix of light-coloured tremolite crystals. The dravite crystals have the crayon-shape termination and good lustre. Unusual specimen from the American side of the Grenville Geological province. s
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- Item #26302
- Pyroxene, etc.
- 6.8x4.4x3.7
cm
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Largest Crystal Size: 10mm
-
$35.00
- Yates Mine
- Otter Lake
Quebec,
Canada
- A plate of lustrous, very dark green pyroxene crystals, associated with pinkish, rounded microcline crystals and dark purple fluorite around some of the crystals.
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- Item #26313
- Rutile, Aegirine
- 5.7x3.0x2.5
cm
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Largest Crystal Size: 16mm
-
$45.00
- Little Dam Lake
- Wakefield
Quebec,
Canada
- This isuch an interesting locality for rutile! You can see the rutile in the calcite matrix as very elongated, almost ropy crystals, that curve and snake between the green, aegirine crystals. Very cool!
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- Item #26314
- Tremolite
- 6.7x6.8x6.2
cm
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Largest Crystal Size: 17mm
-
$55.00
- Minden
Ontario,
Canada
- The display front of this specimen shows nicely exposed equant crystals of very light-green tremolite crystals, naturally etched from calcite matrix. Most of the crystals are doubly terminated with nice terminations.
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- Item #26419
- Fluorite
- 5.5x3.5x3.9
cm
-
Largest Crystal Size: as above
-
$55.00
- Rogers Mine
- Madoc
Ontario,
Canada
- A very gemmy, light green, cube of fluorite with octahedral modifications. Old timer!
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- Item #26478
- Diopside, Calcite
- 7.8x6.5x6.5
cm
-
Largest Crystal Size: 54mm
-
$75.00
- Dog Lake
- Battersea
Ontario,
Canada
- A rather large, for the locality, diopside crystal is nicely exposed in creamy-white calcite, along with some much smaller crystals. The diopside crystals are a very pale greenish colour and associated with a few phlogopite crystals. Displays well.
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- Item #26581
- Tremolite
- 2.8x2.7x2.6
cm
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Largest Crystal Size: as above
-
$45.00
- Norland
Ontario,
Canada
- A doubly terminated dark green, short prismatic tremolite crystal from Norland. Usually, crystals from this location are smaller! Nice one1
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- Item #26595
- Dravite, Quartz
- 10.3x5.0x5.3
cm
-
Largest Crystal Size: 33mm
-
$140.00
- Powers Farm
- Pierrepont
New York,
USA
- A cluster of black, lustrous, equant dravite crystals, associated with rough quartz crystals. The cluster shows three main dravite crystals and some smaller ones. Displays nicely too! A Very nice specimen from the American side of the Grenville Geological Province.
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- Item #26604
- Beryl
- 10.5x2.7x2.2
cm
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Largest Crystal Size: as above
-
$75.00
- The Beryl Pit
- Quadeville
Ontario,
Canada
- A dark-green, singly-terminated beryl crystal with some feldspar obscuring the termination. The terminations of these crystals tend to be feathered and intergrown with feldspar.
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- Item #29528
- Tremolite
- 14.0x2.9x2.5
cm
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Largest Crystal Size: As above
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$45.00
- Bristol (Hilton Mine)
- Bristol twp. Pontiac Co.
Quebec,
Canada
- A long fragment of tightly packed tremolite crystals, with a curious curvature to it. Very light coloured so I assume it is close to end-member tremolite. From an unusual locality, as well!
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- Item #27973
- Magnetite
- 7.8x7.0x3.7
cm
-
Largest Crystal Size: 20mm
-
$45.00
- Bentley Lake Occurence
- Bancroft, Hastings County
Ontario,
Canada
- A couple of fairly well formed, simple octahedra of magnetite are nicely exposed in the middle of this calcite vein-dyke matrix. Shows well.
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- Item #29674
- Grossular, Diopside, Calcite
- 6.4x3.3x3.5
cm
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Largest Crystal Size: 6mm
-
$45.00
- York River Skarn Zone
- Bancroft, Hastings County
Ontario,
Canada
- The York River area has been off limits for many years now, since the installation of a conservation area. This specimen was collected decades ago and sports a very well formed grossular crystal. Could be etched to reveal more grossulars and diopside crystals...or not. :)
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- Item #29491
- Diopside
- 2.0x1.2x0.9
cm
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Largest Crystal Size: As above
-
$35.00
- Ch. Principal road cut
- N. of Laurel
Quebec,
Canada
- A well-formed, partially gemmy, singly terminated crystal of diopside from this Grenville occurrence.
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