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Search found 31 matches |
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newryqs Replies: 5 Views: 14651 |
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We know that a trade/commerce existed in stones, gems, and minerals for hundreds of thousands of years. I think the concept of a "show" as a moveable feast complete with advertising, is a ne ... | |
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newryqs Replies: 5 Views: 14651 |
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Hamlin's brother-in-law, Samuel Carter, was probably also a dealer along with Nathaniel Perry. All three were known mineral dealers living in Paris, Maine. Carter was a part-time mineral dealer, howev ... | |
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newryqs Replies: 5 Views: 14651 |
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There was an advertised one day mineral show in Paris, Maine in 1882. Augustus Hamlin invited participants to the American Association for the Advancement of Science, who were taking the train back fr ... | |
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newryqs Replies: 8 Views: 13987 |
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Science doesn't thrive in a vacuum, of course. Times change. Standards changed. In particular, the expectation of more rigorous standards applied to science evolved. Early Science was mostly self-fund ... | |
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newryqs Replies: 8 Views: 13987 |
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Van King | |
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newryqs Replies: 8 Views: 13987 |
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Just based on numbers of species, the biological world had to respond earlier and faster in keeping track of what was really new committees of specialists were organized to evaluate species descriptio ... | |
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newryqs Replies: 7 Views: 18117 |
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Don't forget that Dave and Kay Jensen were also co-founders. | |
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newryqs Replies: 13 Views: 19453 |
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There are many minerals known in a single grain. Some minerals are known only from a polished section, before the IMA required a x-ray data set. Some minerals such as acanthite are not present in anyo ... | |
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newryqs Replies: 20 Views: 61441 |
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If the columns in your table represent hours of processing time you should upgrade your computer. I just ran a 200 photo stack for both dmap and pmax in Zerene and the stacks took 10 minutes or a litt ... | |
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newryqs Replies: 8 Views: 15370 |
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The concern is always present that even if you "follow the directions" exactly, the result may be different or a mixture. It is likely that you have a fine-grained precipitate and the identi ... | |
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newryqs Replies: 8 Views: 15370 |
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The first question is, "Did you actually make fluorapatite?" I don't think pure fluorapatite is fluorescent. I presume you have excellent chemical skills and you controlled temperature, used ... | |
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newryqs Replies: 8 Views: 15370 |
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I presume that the "fluoride salt" contains an activator. As fluorapatite is what you are making, the fluoride salt would only assure that you had full F in the apatite. Does ultra-pure fluo ... | |
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newryqs Replies: 8 Views: 15370 |
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See Jaffe (1951) Abstract on the Literature on Synthesis of Apatites and Some Related Phosphates. USGS Circular 135. It's the first hit on google when you search apatite synthesis. You didn't say w ... | |
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newryqs Replies: 8 Views: 15112 |
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The dolomite is rather accurately shown for art. Dolomite is trigonal and the crystals shown are displaying the trigonal symmetry of the c axis of dolomite. One of the crystals on the edge is pseudocu ... | |
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newryqs Replies: 19 Views: 46524 |
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Excellent. BTW When writing a reply to a post, the "reply page" is different than the posting page. You must leave the page where one can view the images/comments. It is helpful to refer bac ... | |
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