David K. Joyce

Grenville, Marialite, etc., Montcerf, Quebec

Some excellent crystals and clusters of crystals of marialite, associated with titanite and pyroxene have been found recently near Montcerf, Quebec. Please note that the fluorescent red colour is more of a rich, deep-red than a pink-red as shown in the photos. I seemed to have had a difficult time capturing the real red colour. Some of the marialite crystals have a thin, brownish veneer? That is allanite-(Ce), a slight alteration overgrowth on the scapolite (Pers. Comm., P. Belley, 2108). Here are some examples for you!

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.

Titanite, Marialite, PyroxeneGrenville, Marialite, etc., Montcerf, Quebec
  • Item #27150
  • Titanite, Marialite, Pyroxene
  • 4.4x3.5x3.9 cm
  • Largest Crystal Size: 27mm
  • $40.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • Here is a very nice, sharp titanite perched on a very ugly marialite crystal with some smaller pyroxenes attached to the back. The titanite could be cleaned a little more, looking at the photo! Very nice!
Titanite, PyroxeneGrenville, Marialite, etc., Montcerf, Quebec
  • Item #27144
  • Titanite, Pyroxene
  • 4.6x3.8x1.9 cm
  • Largest Crystal Size: t-20mm
  • $40.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • A single, sharp, dark brown titanite crystal sits well exposed at the back of the matrix. Nice example!
Titanite, Marialite, Allanite-(Ce), PyroxeneGrenville, Marialite, etc., Montcerf, Quebec
  • Item #19717
  • Titanite, Marialite, Allanite-(Ce), Pyroxene
  • 9.7x9.5x3.8 cm
  • Largest Crystal Size: m-37mm, t-21mm
  • $50.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • A nice plate, showing cris-crossing marialite crystals with a couple of black titanite crystals. The coating on the marialite crystals is allanite-(Ce). Nice specimen!
Marialite, Allanite-(Ce), PyroxeneGrenville, Marialite, etc., Montcerf, Quebec
  • Item #19705
  • Marialite, Allanite-(Ce), Pyroxene
  • 5.4x4.2x3.3 cm
  • Largest Crystal Size: 25mm
  • $45.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • A nice cluster of sharp marialite crystals with a slight alteration coating of allanite-(Ce). Nice!
TitaniteGrenville, Marialite, etc., Montcerf, Quebec
  • Item #19708
  • Titanite
  • 2.6x2.3x1.0 cm
  • Largest Crystal Size: 21mm
  • $35.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • A sharp cluster of two dark-brown titanite crystals. Thumbnail sized.
Pyroxene GroupGrenville, Marialite, etc., Montcerf, Quebec
  • Item #19709
  • Pyroxene Group
  • 7.8x6.1x4.0 cm
  • Largest Crystal Size: 22mm
  • $55.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • Maybe the best pyroxene crystal groups that I have seen from this locality!
Marialite, PyroxeneGrenville, Marialite, etc., Montcerf, Quebec
  • Item #19711
  • Marialite, Pyroxene
  • 7.8x6.1x5.0 cm
  • Largest Crystal Size: 49mm
  • $45.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • This specimen shows a silky-creamy marialite crystal at the front of a mound of corroded pyroxene group crystals. Displays well!
MarialiteGrenville, Marialite, etc., Montcerf, Quebec
  • Item #19713
  • Marialite
  • 5.7x6.2x4.7 cm
  • Largest Crystal Size: 32mm
  • $35.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • Several sharp, creamy white marialite crystals are formed at the front of this scapolite gneiss. Sharp looking specimen of this scapolite Group mineral!
Titanite, Marialite, PyroxeneGrenville, Marialite, etc., Montcerf, Quebec
  • Item #19714
  • Titanite, Marialite, Pyroxene
  • 5.5x4.3x4.6 cm
  • Largest Crystal Size: t-24mm
  • $45.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • The top of this massive marialite matrix is covered by small pyroxene crystals and several, sharp, dark-brown titanite crystals. Excellent example!
Marialite, PyroxeneGrenville, Marialite, etc., Montcerf, Quebec
  • Item #19715
  • Marialite, Pyroxene
  • 6.0x5.0x3.0 cm
  • Largest Crystal Size: 39mm
  • $40.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • This specimen is a nice, creamy white, singly terminated marialite crystal is thickly encrusted on the lower part by many smaller, dark-green- pyroxene crystals.
Titanite, Marialite, DiopsideGrenville, Marialite, etc., Montcerf, Quebec
  • Item #21560
  • Titanite, Marialite, Diopside
  • 9.7x7.5x5.4 cm
  • $75.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • An opening at the front of this specimen has had orange calcite partially dissolved away to reveal a number of very dark-brown titanite crystals on the scapolite crystals. The titanites are razor-sharp, wedge-shaped crystals. Looks good!
Marialite, Allanite-(Ce), DiopsideGrenville, Marialite, etc., Montcerf, Quebec
  • Item #21561
  • Marialite, Allanite-(Ce), Diopside
  • 10.0x5.7x5.3 cm
  • Largest Crystal Size: 87mm
  • $55.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • A couple of elongated, prismatic marialite crystals merge together with a lump of compacted diopside crystal at the base. The crystals have allanite-Ce alteration forming a very thin veneer on the prism faces. Unique!
TitaniteGrenville, Marialite, etc., Montcerf, Quebec
  • Item #21562
  • Titanite
  • 6.3x5.3x2.0 cm
  • Largest Crystal Size: 42mm
  • $55.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • A sharp, dark-brown titanite crystal with a little rounded diopside attached. Nice crystal!
TitaniteGrenville, Marialite, etc., Montcerf, Quebec
  • Item #21564
  • Titanite
  • 4.0x2.6x2.5 cm
  • Largest Crystal Size: as above
  • $35.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • A larger, dark-brown titanite crystal with a smaller one attached to the front. Looks good!
Marialite, Allanite-(Ce)Grenville, Marialite, etc., Montcerf, Quebec
  • Item #21582
  • Marialite, Allanite-(Ce)
  • 12.0x7.5x4.0 cm
  • Largest Crystal Size: 67mm
  • $75.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • The front of this specimen is largely covered by marialite crystals, mostly in parallel growth. At the top is one larger, doubly terminated marialite crystal with an allanite-(Ce) veneer from slight alteration, commonly seen in scapolite. A little pyrite on the front, too. Sorry the fluorescent photo is grainy but you get the idea! A handsome piece when propped up properly.
MarialiteGrenville, Marialite, etc., Montcerf, Quebec
  • Item #24893
  • Marialite
  • 9.0x6.1x3.9 cm
  • Largest Crystal Size: 18mm
  • $65.00
  • Zec Desert
  • Montcerf
    Quebec, Canada
  • A large cluster of shorter, well terminated marialite crystals, all showing very good tetragonal prism and terminations. Some of the crystals have a thin alteration covering composed of allanite. Shows well!