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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 7 matches |
| Author | Message |
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 Topic: Looking for references for Emerald Mine Tours in Colombia |
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| MSrockhound Replies: 0 Views: 9563 |
 Forum: Rockhounding trips Posted: Jan 17, 2017 19:22 Subject: Looking for references for Emerald Mine Tours in Colombia |
| Currently looking to book a tour of one of the emerald mining areas either Chivor or Muzo, this March. Currently I am having trouble finding tour groups or even a personal guided tour. Does anyone hav ... | |
| Topic: Corundum var. Sapphire and Ruby from same locality |
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| MSrockhound Replies: 10 Views: 23940 |
Forum: Minerals and Mineralogy Posted: Feb 24, 2014 12:25 Subject: Re: Corundum var. Sapphire and Ruby from same locality |
| Yes I agree about the quarts but the ruby specimen I hadn't had a chance to test yet and the white crystals were too small to see their habit without magnification. The sapphire is most definitely on ... | |
| Topic: Corundum var. Sapphire and Ruby from same locality |
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| MSrockhound Replies: 10 Views: 23940 |
Forum: Minerals and Mineralogy Posted: Feb 23, 2014 23:26 Subject: Corundum var. Sapphire and Ruby from same locality |
| At my local gem and mineral show this weekend I picked up two specimens of corundum labeled as being from Ilmen Mts, South Urals, Russia.
However, the sapphire appears to be on a feldspar matrix ... |
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| Topic: Strange Tourmaline formation containing a straw like channel |
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| MSrockhound Replies: 4 Views: 11098 |
Forum: Minerals and Mineralogy Posted: Jan 11, 2013 00:07 Subject: Strange Tourmaline formation containing a straw like channel |
| I was offered this specimen recently and was curious as to how it could have formed, how rare this is, and if this is something I should purchase before its too late. I enjoy having a few atypical spe ... | |
| Topic: Cation exchange capacity? |
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| MSrockhound Replies: 3 Views: 8633 |
Forum: Off-Topic and Introductions Posted: Dec 04, 2011 03:06 Subject: Re: Cation exchange capacity? |
| Thank you so much! I was confused looking at diagrams of CEC of kaolinite and montmorillonite but you have have put it in terms much easier for me to relate to a particular problem on my eng geo final ... | |
| Topic: Cation exchange capacity? |
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| MSrockhound Replies: 3 Views: 8633 |
Forum: Off-Topic and Introductions Posted: Dec 04, 2011 00:49 Subject: Cation exchange capacity? |
| Why do high values of cation exhange capacity cause engineering problems? high values in things like montmorillonite would swell less than those of kaolinite, with its low exchange capacity, so why it ... | |
| Topic: Cleaning Quartz |
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| MSrockhound Replies: 14 Views: 73708 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Oct 20, 2008 21:53 Subject: Cleaning Quartz |
| How can I clean this quartz of what appears to be rust buildup? I want it to be clean but I don't want to ruin the crystals. | |
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