ynot Posted June 4, 2016 Share Posted June 4, 2016 (edited) Very nice guys! Based on your specimens I am thinking more hemimorphite for my little one... I thought maybe Smithsonite. no ID came with it but was to pretty not to pick up for $1 at a rock show. 20160113_112543.jpg 20160113_112306.jpg Hey Lisa' Smithsonite is a carbonit and if You crush a small piece it will fizz in acid or hot vinegar. (Acid will give a better result.) It also has a waxy feel and satin luster. Hemimorphite will not fizz . Hemimorphite does not have a waxy feel and has more of a frosted luster. There is a lot of Hemimorphite from China in the market. It is hard to tell the difference from a picture. Tony Edited June 4, 2016 by ynot 1 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
PRK Posted June 5, 2016 Share Posted June 5, 2016 (edited) Blue, eh!! How bout some early Cambrian blue trilobites I found in the early Cambrian Latham shale in the marble mountains of California. And a lovely azurite/malachite nodule from China. Edited June 5, 2016 by PRK Link to comment Share on other sites More sharing options...
ricardo Posted June 11, 2016 Share Posted June 11, 2016 Hi, A few good azurite specimens from my collection. Regards, Ricardo Azurite, 5x4.5 cm, main crystal 2x1.5x1 cm. Pit No. 9, Touissit, Touissit District, Jerada Province, Oriental Region, Morocco Azurite, 9x5 cm. Seabra, Bahia, Brazil Azurite and malachite, 6x5 cm. Cochise Co., Arizona, USA Link to comment Share on other sites More sharing options...
Ridgehiker Posted June 11, 2016 Share Posted June 11, 2016 (edited) I have few fossils with blue in them. The exception being Paleozoic shark teeth and inarticulate brachiopods...both are aragonite, calcium phosphate. One photo of a tooth. I have a lot of blue minerals and rocks collected over the decades. i keep better specimens in indoor display cases but slabs in outdoor birdbath-type bowls. My favourite is labradorite...a photo of piece in the bowl. They look dull until the refracting planes catch the sun ( two photos for comparison). Please excuse the dirty fingers as working in the garden. Also tossed in a photo of a blue rock mosaic table I made. Inspired by field trips to the Arctic. I tried lapidary ( cabachons, etc.) for a while but have zero artistic skill. The mosaics were fun because I enjoy the carpentry more and no artistry needed... just cutting and gluing pieces. Inuktitut...Nan'ook'...in English, Polar Bear. Edited June 11, 2016 by Ridgehiker 1 Link to comment Share on other sites More sharing options...
Ridgehiker Posted June 12, 2016 Share Posted June 12, 2016 Lower Carboniferous lingulid brachiopods in nodules. Co. Durham, UK. IMG_1947.jpg IMG_1949.jpg Those are great specimens. Extra special the way they in the nodules. I have a few bluish Orbiculoid type unarticulated brachs from the Carboniferous and only one lingulid... but it's more like a bluish film on the rock. Link to comment Share on other sites More sharing options...
bcfossilcollector Posted June 12, 2016 Share Posted June 12, 2016 A small Chalcanthite specimen from Utah.I think this is from the San Juan County region. Link to comment Share on other sites More sharing options...
TqB Posted June 13, 2016 Share Posted June 13, 2016 Those are great specimens. Extra special the way they in the nodules. I have a few bluish Orbiculoid type unarticulated brachs from the Carboniferous and only one lingulid... but it's more like a bluish film on the rock. Thank you! I'd like to know why phosphatic fossils are often this sort of colour. Tarquin Link to comment Share on other sites More sharing options...
Ridgehiker Posted June 13, 2016 Share Posted June 13, 2016 Thank you! I'd like to know why phosphatic fossils are often this sort of colour. The primary stable mineral is apatite( teeth, inarticulate brachs) and it reflects bluish ligh of the colour spectrum. . I'm guessing the blackish in these brachs and teeth comes from manganese, common in oceans, but I'll defer to one of the knowledgeable shark tooth collectors on that one. Link to comment Share on other sites More sharing options...
Ridgehiker Posted June 14, 2016 Share Posted June 14, 2016 I was walking around the garden and remembered that I have some blue dinosaur bone...end of a Tyrannosaurid scapula. Not really collectable quality but brought a piece home years ago because of the colour. A lot of the bone in a particular layer was 'bluish'...likely traces from the presence of some copper mineral in the clays. It's the only place with bluish Dino bone in our area and is denser and heavier than other bone. Link to comment Share on other sites More sharing options...
TqB Posted June 16, 2016 Share Posted June 16, 2016 The primary stable mineral is apatite( teeth, inarticulate brachs) and it reflects bluish ligh of the colour spectrum. . I'm guessing the blackish in these brachs and teeth comes from manganese, common in oceans, but I'll defer to one of the knowledgeable shark tooth collectors on that one. Thank you! Tarquin Link to comment Share on other sites More sharing options...
squali Posted June 26, 2016 Share Posted June 26, 2016 Inuktitut...Nan'ook'...in English, Polar Bear.The native language is much better at conveying the presence of said bear.Whispered or shouted, it has weight. It's hard to remember why you drained the swamp when your surrounded by alligators. Link to comment Share on other sites More sharing options...
ynot Posted November 11, 2016 Share Posted November 11, 2016 No more blues? Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
VTinNorthAB Posted July 23, 2017 Share Posted July 23, 2017 Blueeeeeee!!! I have a few pieces of labradorite that are mostly blue but yea these are better 1. Blue kyanite 2. Celestite 3. Chrysocolla 4. Eilat stone 5. Ajoite!! 6. Sodalite 7. Chrysocolla with shattuckite Link to comment Share on other sites More sharing options...
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