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[Firmo Espinar]

Quartz, Pyrite, Calcite from Panasqueira, Portugal.

A couple of crystals covered by blue and golden Pyrite and sharp Calcite.

[Firmo Espinar]

Calcite from Candesa Quarry, Cantabria, Spain.

[Firmo Espinar]

Quartz with Aurichalcite from Cantabria, Spain.

[Firmo Espinar]

Arsenopyrite and Siderite from Panasqueira, Portugal.

[Firmo Espinar]

Goethite from Tharsis, Huelva, Spain.

Iridiscent Goethite.

[Firmo Espinar]

Quartz from Minas Gerais, Brazil.

Translucent Quartz with many faces.

Due the light hidden lines appear in three termination faces, that divide all of them. The main face is a triangle and the others are a pentagon and a trapezoid.
These lines are not noticed by touch.

[Sante Celiberti]

Nice light effect on the pseudo pyramid faces.

I've counted on your triangle 4 edges: the fourth belongs to an extra S face. Congratulations for this bonus.

[Firmo Espinar]

Hi Sante.

Thank you very much for your message.

You’re right about that. I´d described the first triangle with four edges.


Now a Calcite from Cantabria, Spain.

[Firmo Espinar]

Quartz from San Roque, Northeastern, Antioquia Department, Colombia. (Nº-72).

Slim doubly terminated crystal with internal white drawings.

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Quartz from Mexico.

[Firmo Espinar]

Kyanite from Minas Gerais, Brazil.

Three divergent flattened sprays of black Kyanite.

[Firmo Espinar]

Quartz from Peñas Blancas, Colombia. (Nº-73).

Many faces are present at the top of this little crystal.

[Firmo Espinar]

Goethite from La Lapilla Mine, Huelva, Spain.

[Firmo Espinar]

Quartz from Peñas Blancas, Boyacá Department, Colombia. (Nº-74)

A white inclusión like a horizontal cloud in this crystal with some extra faces at the top.

There is a sharp face with many edges into the red ellipse.

[Firmo Espinar]

Calcite from Moscona Mine, Asturias, Spain.

Ex Jonathan Carral. Mined in October 2009.

[Firmo Espinar]

Aragonite from Almería, Spain.

Field collected in 2015.