Ivory or bone ?

[Silver Shield]

Being a new member to this wonderful forum , I am not sure of all the information that has been written about Ivory. I have also forgotten all the technical terms , for being old and well worn .But in looking at elephant Ivory , I have always on all samples , I have seen ,not only these lines but also a crosshatch pattern , however faint . Bone nor walrus tusk ect does not have this . And bone , Ivory and most early composits will crack , due to dehydration ect or pressure of course.
I my library I had before my dear Ex sold off for pennies , I had the original manuscript , circa 1900 of the famous frozen Mammoth, that it was said at the time the expedition members cooked and ate some , UNTRUE. But one fact that struck me was that huge amounts of fossil Ivory was mined in Siberia , still at the time , 100s of tonnes per year. Most Ivory used in Europe before this time ( being pre 1900) and I cannot remember what centuries they talked about in all , was fossil Ivory , I mean in the 1600s ect AFRICA was wild and dangerous , and fossil Ivory seemingly in the Siberian tundra was plentiful . I have handled a lot of fossil Ivory and some comments on red , brownish, black coloration is indicative of mineralization seen in fossil Ivory , not such as African or Asian Ivory. Ivory is really tough stuff as seen by the use of fossil Ivory about 10,000 years or older and does not readily mineralize , as it takes decades to get a patina, usually only a tea color , like that of new items faked as old and colored with tea .
I hope this is informative if not only a few words