This is a smaller than usual thumbnail but an exceptional, complete, perfect, gem clear and sharp crystal of Carletonite. Carletonite is a rare mineral that is also beautiful and is only found at one locality, Mt St. Hilaire. It has been more than two decades since any specimens were found, these now only come from the breakup of old collections. Some few crystals exist that are larger but almost never gemmy or complete.
Grossular from Jeffrey Mine that is transparent, has fine orange color and has several slender crystals of Diopside seen inside the Garnet. Aside from some very small contacts and rough edges this is in fine condition. The luster is glass-like and this crystal has very few striations on the large faces which makes it easy to see through these windows into the crystal. Ex Larry White thumbnail collection, he obtained this in the early 80's when the mine was still active and great things were being found.
Siderite - unusual form
Poudrette Quarry, Mont Saint-Hilaire
3.6 x 3.3 x .9 CM (miniature)
A complete, undamaged Siderite crystal in the rare triangular form that was distinctive only at Mont St. Hilaire. This legendary locale at one time produced Rhodochrosites and Siderites (both Carbonate minerals) in this habit almost never seen any place else. The Siderite is translucent as well, with a strong back-light it glows a yellow green color. The photos here are not backlit as this shows better the specimen in a "normal" display. In fine condition, no chips or damage, an odd Siderite and a very nice St Hilaire specimen.
Jeffrey Mine, Asbestos
3 x 1.7 x 1.4 CM (small miniature/ large thumbnail (toenail))
A vividly colored, complete, doubly terminated crystal (a "floater") with no matrix. From the Jeffrey Mine which is the only locality that ever produced such colorful Vesuvianite. Highly lustrous in person the crystal has is mostly a mix of green hues from dark to lighter yellowish and has one spot of purple. In fine condition, the faces on this are multi stepped and quite a bit more complex than most crystals from this famed locale. The mine has been closed for years but the heritage of its minerals is world renowned. Choice
Grossular -rare colorless crystals
Jeffrey Mine, Asbestos
3.3 x 3 x 2.2 CM (small miniature/ large thumbnail (toenail))
Garnets that are colorless are surprisingly rare world wide, only a few small finds have ever been made. Grossular that is colorless and gem clear is even more rare, and a choice matrix specimen packed with crystals is exceptional. The largest crystal on this piece is 1.1 CM in diameter, quite huge for the specie. From the great Jeffrey mine, this is a choice very glassy piece in fine condition. For any serious Garnet collection, this is hard to capture in photos but is great in person.
Grossular -Gemmy crystals
Jeffrey Mine, Asbestos
3.1 x 2.1 1.3 CM (small miniature/ large thumbnail (toenail))
A cluster or stack of very lustrous Garnets with the classic color and form that made the Jeffrey Mine world famous. This is the flattened type of cluster with no matrix, it is entirely contacted on the back as was the case with this style, fully translucent and mostly transparent. This type of specimen was sometimes used as a sort of natural jewelry, mounted or wire wrapped as is or with the back ground flat. A very good value these Garnets show characteristic striations and growth hillocks. A fine modern classic from a source that will never again produce anything.
Rhodochrosite on Analcime
Mont Saint-Hilaire, Monteregie
4.6 x 3.6 x 2.5 CM (miniature)
A killer miniature with a main Rhodochrosite rhomb 3.2 CM in diameter which is perfectly perched on a cluster of Analcime crystals. The Rhodos are opaque in some areas and translucent in others, perhaps due to some dark inclusions (Birnessite?). The luster is in person impressively bright and glassy, there are some subtle striations and growth structures as well that add interest in person. The faces show a color range and mottling from dark reds, pinks and close to black in spots. Rhodochrosite at Mont St. Hilaire took many forms and color hues, but such well formed, sharp textbook crystals are not common at all. This is an exceptional showy piece in remarkable clean condition.
Flattened habit mint green crystals often called "Demantoid" are in a stacked alignment with almost no matrix present. From the now classic finds made over 25 years ago at Black Lake, these Garnets are far larger than the average and this is an incredibly enormous cluster, the largest we have ever seen. The biggest garnet in the cluster is over 2.2 CM across, it is huge for this locale where most are 2-3mm in size only. Translucent with some tiny areas of transparency, the luster is moderate, some faces are glassy but others are slightly dusted with and included by tiny needles of Pectolite with gives a more matte effect. In excellent condition at 20X magnification no damage or chips can be found which is also quite rare. For some reason many of the larger crystals we have seen had unusual or distorted habits including this sort of flattening. A very choice and huge green Andradite.