Wookmom Posted February 17, 2019 Share Posted February 17, 2019 My Dad was given a few slabs of this rock from a friend in Phoenix, AZ. We can’t figure out what it is. Similar to coral fossils but they aren’t circle in shape. When he cut and polished it, it was really hard. Any ideas? Link to comment Share on other sites More sharing options...
ynot Posted February 17, 2019 Share Posted February 17, 2019 Looks like a mafic stone with crystals. 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...
Rockwood Posted February 17, 2019 Share Posted February 17, 2019 That would be some freaky looking coral. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted February 17, 2019 Share Posted February 17, 2019 It looks like a volcanic porphyry: large crystals set in fine grained mass. Similar stones are known as Chinese Flower Stones. Here are pictures of some found from British Columbia in Canada: http://fredmhaynes.com/2017/06/06/basalt-porphyry-flowerstone/ 7 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Wookmom Posted February 17, 2019 Author Share Posted February 17, 2019 Thank you so much! That is exactly what it is! Link to comment Share on other sites More sharing options...
abyssunder Posted February 17, 2019 Share Posted February 17, 2019 What you have there is called "Chrysanthemum Stone", sometimes "Flower Stone". link link link 2 " 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...
fifbrindacier Posted February 17, 2019 Share Posted February 17, 2019 1 hour ago, Wookmom said: My Dad was given a few slabs of this rock from a friend in Phoenix, AZ. We can’t figure out what it is. Similar to coral fossils but they aren’t circle in shape. When he cut and polished it, it was really hard. Any ideas? If you polish it, it will be wonderful ! "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
dalmayshun Posted February 19, 2019 Share Posted February 19, 2019 superb Link to comment Share on other sites More sharing options...
FranzBernhard Posted February 19, 2019 Share Posted February 19, 2019 That seems to be a tricky one! On 17.2.2019 at 8:07 PM, abyssunder said: Chrysanthemum Stone That usually consists of rather soft minerals (Mohs < 4) It contradicts with this: On 17.2.2019 at 6:41 PM, Wookmom said: When he cut and polished it, it was really hard This statement is very subjective, though. @Wookmom, are you able to scratch this stone with a knife blade easily? Franz Bernhard Link to comment Share on other sites More sharing options...
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