FMF - Friends of Minerals Forum, discussion and message board

[Jordi Fabre]

Botryoidal aggregates of Brucite on matrix with visible crystal forms.

[Volkmar Stingl]

This is just a "WOW"-piece! This color....... Tremendous!

Volkmar

[Tobi]

I agree, an outstanding specimen - one of the best I've seen from this amazing find!

[Jordi Fabre]

Groups of Adamite crystals on a Goethite matrix. The crystals have a pale lilac color in the prism and much more intense on the terminations.

[Jordi Fabre]

Very aerial growth of botryoidal aggregates of Rhodochrosite crystals on matrix, with Calcite and Pyrite.

[Jordi Fabre]

Very sharp crystals of Fluorite with geometric color zoning, blue on the edges.
On matrix, with small Quartz crystals and lamellar Baryte crystals.

[Tobi]

[Jordi Fabre]

Botryoidal coating of Shattuckite with a velvety appearance highlighting a centered aggregate of primary Malachite crystals.

[Jordi Fabre]

The specimen shows sharp octahedrons, some parts with hopper formations, in parallel growths, very stylized and with a very distinct spinel-law twin.

Check the excellent report of Dr. César Menor-Salván about the singularity of these Golds: The native gold from Guelmim-Oued Noun, Morocco

[Jordi Fabre]

Twinned Cassiterite crystals on matrix and with Quartz. Among the best pieces found in this locality.

[Tobi]

[Jordi Fabre]

Crystal on matrix of Dolomite of the isomorphous series Dissakisite-(Ce)/Allanite-(Ce)
The majority of Trimouns specimens present color zoning that seems to indicate the presence of both species in the same crystal, the darkest areas corresponding to Allanite-(Ce), as they are richer in iron, and the dominant lighter areas to Dissakisite-(Ce)

[Jordi Fabre]

Large crystal with an apparently octahedral habit, formed by polycrystalline growths with dominant dodecahedral forms.
On matrix, with Quartz crystals and white Dolomite rhombohedra.

[Jordi Fabre]

Botryoidal growths of rhombohedral Rhodochrosite crystals which cover a botryoidal Hisingerite-Neotocite (Series) matrix.

[Tobi]

[Jordi Fabre]

Druse on matrix of bipyramidal Creedite crystals, some of them doubly terminated, with sharp pointed terminations.
The specimen is quite different from those known from this locality in recent years, although in some old collections there are similar specimens from the same source, which coincides with the indications that this find was made in old galleries of the mine.

[Jordi Fabre]

Group of Quartz crystals (variety rose quartz)
What stands out most in the piece is how sharp the crystals are since rose quartz very rarely presents so much definition.
A Brazilian classic from the Rock Currier collection (No. 5105)
Specimen size: 11.1 ×5.9 × 3.9 cm
Main crystal size: 3.4 × 1.1 cm

[Jordi Fabre]

Dendritic growths of very elongated Silver crystals covered by darker Acanthite and on a Calcite matrix.