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A general guide for using the Forum with some rules and tips
The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
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| Search found 29 matches |
| Author | Message |
|---|---|
 Topic: Tourmaline type question |
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| jorge santos garcia Replies: 22 Views: 37525 |
 Forum: Micros & Macros - Images of Minerals Posted: Sep 07, 2018 17:37 Subject: Re: Tourmaline type question |
| Hello Kara (and all)
We shall avoid the use of varietal/commercial tourmaline names such as verdelite, rubellite, indicolite, schorl, etc., as they do not mean anything more than the color of the s ... |
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| Topic: Looking for geologic/mineral sites to visit in Spain, Portugal |
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| jorge santos garcia Replies: 6 Views: 18855 |
Forum: Rockhounding trips Posted: Apr 17, 2013 20:11 Subject: Re: Looking for geologic/mineral sites to visit in Spain, Portugal |
| Hello Pete
I e-mailed your friends directly as you suggested. Cheers Jorge |
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| Topic: A Scientific and mineralogical trip to the Iberian Pyrite Belt - (6) |
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| jorge santos garcia Replies: 25 Views: 88010 |
Forum: Featured Columns of FMF Posted: Apr 17, 2013 19:47 Subject: Re: A Scientific and mineralogical trip to the Iberian Pyrite Belt - (6) |
| Thank you Josele.
And now some information about Neves-Corvo mine: Neves-Corvo is a modern mine, whose sulphide orebodies of Neves and Corvo where discovered in 1977. It’s exploitation started in ... |
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| Topic: A Scientific and mineralogical trip to the Iberian Pyrite Belt - (6) |
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| jorge santos garcia Replies: 25 Views: 88010 |
Forum: Featured Columns of FMF Posted: Apr 10, 2013 17:03 Subject: Re: A Scientific and mineralogical trip to the Iberian Pyrite Belt - (6) |
| A few more photos. | |
| Topic: A Scientific and mineralogical trip to the Iberian Pyrite Belt - (6) |
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| jorge santos garcia Replies: 25 Views: 88010 |
Forum: Featured Columns of FMF Posted: Apr 10, 2013 16:41 Subject: Re: A Scientific and mineralogical trip to the Iberian Pyrite Belt - (6) |
| Some information about Aljustrel mines:
The polymetallic sulphide ore are mainly iron sulphides (pyrite -> 70%) that associate varying proportions of sulfides of copper (chalcopyrite), zinc (sphal ... |
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| Topic: A Scientific and mineralogical trip to the Iberian Pyrite Belt - (6) |
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| jorge santos garcia Replies: 25 Views: 88010 |
Forum: Featured Columns of FMF Posted: Apr 09, 2013 18:05 Subject: Re: A Scientific and mineralogical trip to the Iberian Pyrite Belt - (6) |
| Let me share some information about the Iberian Pyrite Belt, as well, complementing the previous data posted by César:
The Iberian Pyrite Belt (IPB) corresponds to an area of Devonian-Carboniferous ... |
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| Topic: Any Special Care to Keep Ettringite? |
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| jorge santos garcia Replies: 2 Views: 7229 |
Forum: Minerals and Mineralogy Posted: Jan 07, 2011 04:43 Subject: Re: Any Special Care to Keep Ettringite? |
| Thank you Alfredo, I will hold my breath everytime I look at it.
Cheers Jorge |
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| Topic: Any Special Care to Keep Ettringite? |
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| jorge santos garcia Replies: 2 Views: 7229 |
Forum: Minerals and Mineralogy Posted: Jan 06, 2011 19:16 Subject: Any Special Care to Keep Ettringite? |
| Hello all
I've read that ettringite may dehidrate over time and became white, opaque and dull, sometimes it even may alter to gypsum. Is there any kind of special care to avoid that to happen? ... |
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| Topic: It is a twin? |
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| jorge santos garcia Replies: 4 Views: 9112 |
Forum: Minerals and Mineralogy Posted: Jul 02, 2010 03:45 Subject: Re: It is a twin? |
| Thank you both. That's what I thought, but was not certain.
Jorge |
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| Topic: It is a twin? |
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| jorge santos garcia Replies: 4 Views: 9112 |
Forum: Minerals and Mineralogy Posted: Jun 29, 2010 12:17 Subject: It is a twin? |
| Hello all
I have a biterminated quartz crystal, with one terminated point at one end and two terminated points at the other end. It seems to be one crystal, see anything that can make me think of t ... |
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| Topic: New system of LED lighting |
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| jorge santos garcia Replies: 12 Views: 20587 |
Forum: Off-Topic and Introductions Posted: Jun 21, 2010 03:28 Subject: Re: New system of LED lighting |
| You can find it at IKEA stores. I've one myself I bought there, for € 35,00 to 40,00, if I'm not wrong.
Cheers Jorge |
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| Topic: Acid 'Dipping' of Calcite/ Acid treatment to liberate minerals in Calcite |
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| jorge santos garcia Replies: 7 Views: 20790 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: May 28, 2010 05:47 Subject: Re: Acid 'Dipping' of Calcite/ Acid treatment to liberate minerals in Calcite |
| it's not difficult to see if a calcite was acid treated. It would have a greasy look instead of the usual glassy lustre. If you handle it, yuo will feel also a greasy and smoothed touch.
At naked e ... |
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| Topic: Calcite Forms - (4) |
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| jorge santos garcia Replies: 163 Views: 370587 |
Forum: Featured Columns of FMF Posted: Mar 16, 2010 19:33 Subject: Re: Calcite Forms - (4) |
| Forgot add the other one. | |
| Topic: Calcite Forms - (4) |
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| jorge santos garcia Replies: 163 Views: 370587 |
Forum: Featured Columns of FMF Posted: Mar 16, 2010 19:24 Subject: Re: Calcite Forms - (4) |
| Two other complex calcite twins, from Portugal
Cheers Jorge |
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| Topic: Why we collect? |
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| jorge santos garcia Replies: 24 Views: 60773 |
Forum: Minerals and Mineralogy Posted: Nov 10, 2009 13:41 Subject: Re: Why we collect? |
| This new subject is very interesting to me, unfortunately my English knowledge do not allows me to go thorough a deep technical discussion., would need a lot of time to search for the right words, don ... | |
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