David K. Joyce

Mont Saint-Hilaire, Catapleiite

One of the best minerals to come from Mont Saint-Hilaire (in my humble opinion!). Here are excellent specimens with very well formed crystals of this zirconium silicate mineral.

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.

CatapleiiteMont Saint-Hilaire, Catapleiite
  • Item #12990
  • Catapleiite
  • 5.3x3.0x2.5 cm
  • Largest Crystal Size: 8mm
  • $85.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • Some gorgeous catapleiite crystals on this specimen! There are several crystals, all very well formed, thin, bladed crystals on a microcline crystal section along with an unidentified carbonate. The largest of the catapleiite crystals shows nicely beveled edges. Excellent!
CatapleiiteMont Saint-Hilaire, Catapleiite
  • Item #11634
  • Catapleiite
  • 3.0x2.7x2.3 cm
  • Largest Crystal Size: 9mm
  • $75.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • A few beautiful, semi-parallel crystals of catapleiite are nicely exposed on this matrix of microcline. Excellent example!
Catapleiite, Ancylite-(Ce), MicroclineMont Saint-Hilaire, Catapleiite
  • Item #22995
  • Catapleiite, Ancylite-(Ce), Microcline
  • 5.3x3.4x2.1 cm
  • Largest Crystal Size: cat-8mm, mic-20mm, ancy-micro
  • $55.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • Cool specimen which is a plate of gray, well formed microcline crystals that has several nice catapleiite crystals on it and little clusters of ancylite crystals all over the place. Interesting piece!
Catapleiite, AlbiteMont Saint-Hilaire, Catapleiite
  • Item #23060
  • Catapleiite, Albite
  • 4.5x3.2x2.0 cm
  • Largest Crystal Size: c-11mm
  • $75.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • A very nice, complete catapleiite crystal sits perfectly on a matrix of albite and aegirine. The crystal has a bit of contact on the upper left and is a very nice crystal! Shows well.
CatapleiiteMont Saint-Hilaire, Catapleiite
  • Item #24402
  • Catapleiite
  • 4.4x2.8x2.9 cm
  • Largest Crystal Size: 10mm
  • $65.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • There are several, gemmy, thick-tabular, well formed catapleiite crystals on this mostly interlocking albite crystal matrix. Nice crystals!
CatapleiiteMont Saint-Hilaire, Catapleiite
  • Item #26217
  • Catapleiite
  • 1.6x1.2x0.6 cm
  • Largest Crystal Size: as
  • $45.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • A sharp, colourless, fairly gemmy catapleiite crystal. Has intergrown with other crystals in places but is mostly a sharp single crystal.
CatapleiiteMont Saint-Hilaire, Catapleiite
  • Item #26219
  • Catapleiite
  • 1.4x1.4x0.25 cm
  • Largest Crystal Size: as above
  • $40.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • A single crystal of catapleiite showing an hexagonal outline and beveled edges.
Catapleiite, PectoliteMont Saint-Hilaire, Catapleiite
  • Item #26224
  • Catapleiite, Pectolite
  • 1.2x1.1x0.9 cm
  • Largest Crystal Size: as above
  • $40.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • A peculiar, hexagonal catapleiite crystal with a sort of domed termination, that encompasses a very sharp pectolite crystal. Interesting!
CatapleiiteMont Saint-Hilaire, Catapleiite
  • Item #26226
  • Catapleiite
  • 1.0x0.9x0.7 cm
  • Largest Crystal Size: as above
  • $55.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • A very sharp, gemmy catapleiite crystal with narrow bevels on the edges. Small but potent crystal!
Catapleiite, AncyliteMont Saint-Hilaire, Catapleiite
  • Item #26393
  • Catapleiite, Ancylite
  • 4.6x3.9x4.0 cm
  • Largest Crystal Size: 12mm
  • $65.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • A sharp, composite crystal of catapleiite lays against calcite and aegirine crystals on a matrix of analciome and microcline. There is also a cluster of greenish ancylite crystals. The catapleiite is about 2/3 of a crystal. Rare mineral!!
Catapleiite, Aegirine, Natrolite, etc.Mont Saint-Hilaire, Catapleiite
  • Item #26572
  • Catapleiite, Aegirine, Natrolite, etc.
  • 7.9x6.4x7.0 cm
  • Largest Crystal Size: cat-micro
  • $65.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • This piece of altered pegmatite has a large opening on the fronto of it that expses sprays of black aegirine, largely or partially encrusted with tiny crystals of hexagonal catapleiite. Many hundreds or thousands of them! The matrix is composed of interlocking microcline, natrolite, aegirine and eudialyite group minerals in large crystals. Interesting!
Catapleiite, Aegirine, etc.Mont Saint-Hilaire, Catapleiite
  • Item #26573
  • Catapleiite, Aegirine, etc.
  • 9.3x6.2x5.5 cm
  • Largest Crystal Size: cat-micro
  • $65.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • The matrix for this specimen is a bunch of interlocking microcline crystals with aegirine, natrolite, analcime and catapleiite crystals formed in the spaces between microcline crystals. The catapleiite crystals are mostly formed on aegirine crystals, either totally or partially covering the aegirine and other minerals in the open spaces. Lots to look at!
CatapleiiteMont Saint-Hilaire, Catapleiite
  • Item #27553
  • Catapleiite
  • 1.6x1.1x1.0 cm
  • Largest Crystal Size: 5mm
  • $35.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • A small but potent specimen of perfectly sharp, thick-tabular, catapleiite crystals associated with rutile, siderite and smll sprays of acicular minerals that are possibly elpidite. The acicular minerals are often included in the bases of the catapleiite crystals.
Catapleiite, Siderite, Pyrite, AlbiteMont Saint-Hilaire, Catapleiite
  • Item #27556
  • Catapleiite, Siderite, Pyrite, Albite
  • 3.1x2.2x1.4 cm
  • Largest Crystal Size: 4mm
  • $35.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • Lots of tabular hexagonal-shaped, beveled crystals of catapleiite on this plate of more common minerals. Nice, reasonable example of this fairly rare mineral!
Catapleiite, SideriteMont Saint-Hilaire, Catapleiite
  • Item #27559
  • Catapleiite, Siderite
  • 2.9x2.9x2.1 cm
  • Largest Crystal Size: 5mm
  • $40.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • Lots of beveled, colourless, thich-tabular catapleiite crystals scattered over top and bottom of this plate of siderite and albite. Lots to look at and, if you are a micro-photographer, lots to photograph!
Catapleiite, AegirineMont Saint-Hilaire, Catapleiite
  • Item #27560
  • Catapleiite, Aegirine
  • 2.5x1.7x0.7 cm
  • Largest Crystal Size: 3mm
  • $35.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • There is a cluster of very bright, lustrous, well formed catapleiite crystals on the top of this matrix. Beautiful crystals of this rare zirconium silicate!
Catapleiite, Natrolite, Calcite, AegirineMont Saint-Hilaire, Catapleiite
  • Item #27570
  • Catapleiite, Natrolite, Calcite, Aegirine
  • 4.2x4.0x3.3 cm
  • Largest Crystal Size: cat-14mm, nat-12mm
  • $85.00
  • Mont Saint-Hilaire

  • Quebec, Canada
  • This piece is really a cluster of catapleiite, natrolite and a couple of aegirine crystals held together by calcite. The catapleiite crystals are colourless, gemmy and very well formed pseudo-hexagonal crystals. Most of the crystals are in the recess between natrolite crystals and difficult to get at with the lens but I've tried to show a couple of the exposed ones. What a great mineral!