FMF - Friends of Minerals Forum, discussion and message board

[Firmo Espinar]

Quartz from Muzo, Boyacá Department, Colombia. (Nº-10).

Cluster of doubly terminated flat crystals with a prominent one. There are many rainbows and a white branch inclusion like a geyser just shooting straight up in the air. (Nº-10).

In the last three months in Colombia, I´ve strangely got many doubly terminated specimens from different localities: Muzo, some places in Santander Department and other localities from Antioquia Department.

[Pierre Joubert]

Nice quartz!

[Firmo Espinar]

Thank you very much Pierre for your words.


Quartz from Muzo, Boyacá Department, Colombia. (Nº-16).

Slim and flat Quartz point.

----------
Aragonite from Guadalajara, Spain.

Brown Aragonite crystal showing the hexagonal prismatic habit, and twinned cyclically on {110}.

[David K. Joyce]

Are these opals fluorescent?
David KJ

[Firmo Espinar]

Hi David.

Welcome to FMF.

If you want, you can tell us something about you in the link:

Presentation of new members - Reference Thread :


Casually i acquired few weeks ago an UV torch with black light 395 nm and these opals do not react to this UV light.

But this Aragonite from Toledo (Spain) turns to the yellow under the 395 nm UV light. The same porcupine specimen in a photo with LED light in:

Page 3 Franjungle Collection


Regards.

[Firmo Espinar]

Quartz from Muzo, Boyacá Department, Colombia. (Nº-12).

Flat and wide Quartz crystal with two termination points.

[Firmo Espinar]

Quartz from Neuquén, Patagonia, Argentina.

It´s a Quartz geode with Hematite inclusions purchased in Bogotá from a dealer who was born in Argentina.

[Bob Harman]

FRANJUNGLE,

At the recent 2018 Denver Show several dealers had these. I bought two 10+ cm examples with calcites atop the quartz and one slightly smaller example without calcite. They are apparently from a relatively new find in a gypsum mining area in Patagonia Argentina in 2016/2017.

They appear to be hematite included quartz. While they are commonly called pink amethyst or red amethyst, that may be more of a marketing name than a proper term for them. I prefer to call them "hematite included red quartz". BOB

[Firmo Espinar]

Hi Bob.

Nice to read you here again. I missed you, but i enjoyed the last picture with your two dogs in the Indiana snowy mountains. Thank you for this message.

I have other example with calcites on the quartzs as you comment.

My dear dealer from Bogotá didn´t say me the word hematite. We already know something more about these quartzs.

Best Regards.
_____________________________

Fixed

[Firmo Espinar]

Quartz from Bolivar, Vélez, Santander Department, Colombia. (Nº-28).

Cluster of doubly terminated elongated crystals. There are green points inclusions that seem to be Chlorite.

Some needles are attached in spray. A quartz star bringing the 2018 Christmas.

This specimen comes from a new Colombian locality in my collection, at the south of Santander Department.

[Firmo Espinar]

Quartz from Muzo, Boyacá Department, Colombia. (Nº-6).

Flat and very slim Quartz crystal with smoke inside and little brothers in one face.

[Firmo Espinar]

Quartz from La Belleza, Vélez, Santander Department, Colombia. (Nº-29).

Transparent Quartz crystal with regular hexagon cross section and a great white phantom showing the pyramidal internal faces. With more little crystals downstairs. It is flawless all around.

This comes from La Belleza (The Beauty) also a new Colombian locality in my collection.
Now I know that some of the specimens i have labeled only from Santander Department come from this little municipio at the south of Santander, nearby the municipio Bolívar and the municipio Florián where there are quartz areas.

[Pierre Joubert]

Lovely quartz!

[Firmo Espinar]

Thank you very much Pierre.

Glad that you like.

I was able to obtain four specimens from the same find with the white phantoms. The dealer had eight units and didn´t want to sell me any more, but i was lucky to purchase these crystals.

Kind regards.

[Firmo Espinar]

Quartz from San Cristobal, Suaita, Santander Department, Colombia. (Nº-35).

Needle Quartz crystals.