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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 39 matches |
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David Von Bargen Replies: 6 Views: 10234 |
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Thanks, Jordi.
Just one minor correction, since my time machine is in the shop (it has problems with 2032), it is a report on the 2010 show (2011 will have a show theme of Russian minerals). |
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David Von Bargen Replies: 9 Views: 12874 |
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My next burning question is if a piece is artificially irradiated, will it change the properties of a certain mineral or gem? Well, it depends on the properties and the amount of radiation. Color ... |
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David Von Bargen Replies: 8 Views: 13898 |
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Stink-fluss From the German for "stink" and "flow" - fluorite | |
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David Von Bargen Replies: 8 Views: 11793 |
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Johan Gottschalk Wallerius 1747
Systema Mineralogicum: Quo Corpora Mineralia In Classes, Ordines, Genera Et Species Suis Cum Varietatibus Divisa Describuntur, Atque Observationibus, Experimentis Et F ... |
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David Von Bargen Replies: 8 Views: 11793 |
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I wonder if they were referring to the Swedish mineralogist Johan Gottschalk Wallerius. | |
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David Von Bargen Replies: 16 Views: 18575 |
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There are also cases where people have contracted with mining companies for specimen removal (something that can be economically beneficial to both sides - or at least that can give the mining company ... | |
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David Von Bargen Replies: 14 Views: 21088 |
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A good source for info on colored quartz varieties is George Rossman's chapter "Colored varieties of silica minerals" in Silica, a Mineralogical Society of America "Reviews in Mineralog ... | |
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David Von Bargen Replies: 16 Views: 24091 |
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The Mineralogical Record published a book "Mineral Identification: A Practical Guide for the Amateur Mineralogist" — by Donald B. Peck that is an excellent guide to tests that can be done at ... | |
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David Von Bargen Replies: 2 Views: 7296 |
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Look for binghamite from Minnesota.
BIFs usually are subjected to metamorphism during which the asbestos grows. Parallel alignment of crystals in metamorphic environments is due to the stress fields ... |
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David Von Bargen Replies: 14 Views: 21751 |
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Peter,
If history is any guide, I would not expect a boycott to have any effect on attendance at the show. There was a boycott of Arizona for the ML King holiday from about 1987-1992. I don't recall ... |
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David Von Bargen Replies: 19 Views: 23476 |
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An interesting calculator for various indices
https://www.measuringworth.com/uscompare/ (link normalized by FMF) |
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David Von Bargen Replies: 19 Views: 23476 |
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Using diamond prices as a base collectible for inflation probably isn't a good idea since prices are controlled by a cartel. The easiest collectible pricing to find probably are stamps and coins. They ... | |
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David Von Bargen Replies: 14 Views: 20174 |
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Yes, the cotton fibers can get on the specimens and if the matrix is a bit crumbly, the cotton can get pretty dingy looking. Mineral & Fossil Supply, Inc. in Denver has the cardboard boxes as well ... | |
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David Von Bargen Replies: 18 Views: 24707 |
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The "naturalness" of a mineral has been a bit of a moving target over the years with things generally getting a bit tighter in definition over the years. Minerals from coal fires aren't allo ... | |
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David Von Bargen Replies: 14 Views: 32284 |
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Also happens in native silver. | |
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David Von Bargen Replies: 3 Views: 9223 |
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Usually it is used at about 10%. One part of acid solution is added to three parts of water (for the commercially available 35% concentration). When doing this, be sure to wear eye protection (and glo ... | |
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David Von Bargen Replies: 2 Views: 6075 |
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When you polish something, you are making the surface flat (or gently rounded). Once you grind a stone to the desired shape, you go in and try to get rid of scratches and make the surface smooth. You ... | |
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David Von Bargen Replies: 23 Views: 32279 |
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I believe that some of the activities at Quartzite run between 2 and 4 months. There are a number of antique shows that last up to 6 days (and run three times a year). Renaissance fairs can run up to ... | |
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David Von Bargen Replies: 15 Views: 36064 |
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Which group to put quartz in can provoke a bit of disagreement. The people who like oxides would say it is SiO2. The silicate people would say Si(SiO4). One mineral + two slots= controversy. | |
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David Von Bargen Replies: 45 Views: 72950 |
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Florida perhaps?
did Florida have any mine that was closed a long time around Brooksville, Florida? I found out the supplier left a piece of sheet and it wrote "BrooksvilleFla". . Yes ... |
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