Brad1978 Posted January 2, 2022 Share Posted January 2, 2022 This was found in a cave in Vance. It has a mineral growth on it that glows a neon yellow color under a uv light. The camera makes it appear green but here are some photos. Tell me what y'all think. Link to comment Share on other sites More sharing options...
Coco Posted January 2, 2022 Share Posted January 2, 2022 Hi, Calcareous concretions. Coco 1 ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
Kane Posted January 2, 2022 Share Posted January 2, 2022 Speleotherm. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Brad1978 Posted January 2, 2022 Author Share Posted January 2, 2022 What mineral glows on it? Is it phosphorus? Link to comment Share on other sites More sharing options...
Kane Posted January 2, 2022 Share Posted January 2, 2022 1 minute ago, Brad1978 said: What mineral glows on it? Is it phosphorus? Most often, these are composed of calcium carbonate. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Coco Posted January 2, 2022 Share Posted January 2, 2022 A mineral that reacts under a fluorescent lamp is called fluorescent. Phosphorus is the fact of rendering light on a more or less short duration in the dark after being stimulated to light. Many calcite of different origins react to UV. Coco 1 1 ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
Brad1978 Posted January 2, 2022 Author Share Posted January 2, 2022 Does calcium carbonate have chemiluminescence? Link to comment Share on other sites More sharing options...
Coco Posted January 2, 2022 Share Posted January 2, 2022 Most of the time it is the impurities contained in a mineral that cause fluorescence. Coco 1 ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
abyssunder Posted January 2, 2022 Share Posted January 2, 2022 Maybe it's a composite material, men- made intervention on weathered limestone formation (speleothem) used for orientation purposes in dark environments like caves.(?) " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Brad1978 Posted January 3, 2022 Author Share Posted January 3, 2022 Well quartz is piezoelectric and it glows red under a UV light and retains the glow for a few seconds after removing the light source. Isn't this different than fluorescence? I thought fluorecence is from minerals like phosphorus. So wouldn't quartz be considered just piezoelectric discharge or is it chemiluminescence. And like if you smack a sugar cube really hard with a hammer in the dark it emits blue light for a split second Link to comment Share on other sites More sharing options...
Mahnmut Posted January 3, 2022 Share Posted January 3, 2022 (edited) Hi Brad, emitting visible light when absorbing energy from ultraviolet light or other radiation is called fluorescence, many minerals do that, and as Coco stated above in most cases its the impurities that cause the effect, so not all specimens of a mineral show the same effect. Emitting light for some time after the exposure is called phosphorescence, but its not what gives phosphorus its name glow. (phos-phor simply means carrying light in Greek, so thats the historical root for both terms) Chemiluminescence is what causes white phosphorus to glow, the energy emitted as light results from the slow oxidation of the element. https://en.wikipedia.org/wiki/Phosphorescence#Etymology https://en.wikipedia.org/wiki/Fluorescence https://en.wikipedia.org/wiki/Luminescence https://en.wikipedia.org/wiki/Phosphorus#Chemiluminescence What you have there is most probably calcite sinter, a form of speleothem as Kane mentioned. To tell if it contains bone (possible, but rare) pictures of the most bone-like parts in daylight would help. Best Regards, J Edited January 3, 2022 by Mahnmut clarification 1 1 Try to learn something about everything and everything about something Thomas Henry Huxley Link to comment Share on other sites More sharing options...
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