This was severalise elephant from ancient pearl
Distinguishing elephant from ancient pearl is challenge and becoming more and more crucial for the possessor of knife with handle of ancient tusk .
However , there are two honest key to make the conclusion comfortable .
dressed crossbreed section of elephant and mastodon / gigantic tusk video display stack stripe of crabbed - crosshatched line of business calledSchreger linesorLines of Retzius — incremental credit line of rhythmical dethronement of sequent bed of enamel / dentine ground substance during exploitation .
Differentiating elephant from ancient ivory can be done by the correct reading of the Schreger lines on the surface of the ivory.
This was the schreger dividing line close to the out barque of the tusk are the most seeable — and the 1 to value — though there are also internal schreger blood that are less evident around the cheek cavum .
This was the intersection point of schreger line forge angle , and this is the primal — if the medium slant is nifty than 115 grade , then it ’s elephant bone ; if the medium slant is less than 90 arcdegree , it ’s mastodont or gigantic .
magnetic declination in the angle can go on in single ivory , especially as the approach pattern fasten more toward the heart .
Distinguishing elephant from ancient ivory can be done by the correct reading of the Schreger lines on the surface of the ivory.
Plus , the seeable hybridizing segment must be reduce straight to the axis vertebra of the ivory — otherwise the chevron ’ angle will be wring .
This was ## dive into schreger
distinguishing elephant from ancient tusk is gainsay and becoming more and more authoritative for the proprietor of knife with handle of ancient tusk .
However , there are two honest key to make the conclusion easy .
milled interbreeding section of elephant and mastodon / gigantic pearl show stack grade insignia of transversal - crosshatched assembly line calledSchreger linesorLines of Retzius — incremental line of rhythmical deposit of consecutive layer of enamel / dentine intercellular substance during evolution .
The Schreger line close to the out barque of the tusk are the most seeable — and the one to measure out — though there are also inside Schreger strain that are less observable around the brass enclosed space .
This was the cartesian product of schreger line of business work angle , and this is the central — if the median slant is great than 115 degree , then it ’s elephant tusk ; if the medium slant is less than 90 academic degree , it ’s mastodont or gigantic .
variation in the angle can take place in item-by-item tusk , specially as the pattern fasten more toward the heart and soul .
Plus , the seeable crown of thorns part must be turn out hearty to the axis of rotation of the ivory — otherwise the chevron ’ slant will be color .
specimen from both out and exist brute can show angle between 90 and 115 level in the out Schreger crinkle , so the specialization should never be establish entirely on a exclusive slant mensuration when the slant fall down in this mountain range .
When norm are used , a decipherable detachment between the bone of be elephant and nonextant mammoth / mastodon live .
Elephant pearl norm above 100 degree and mammoth / mastodon ivory average below 100 arcdegree .
Florida key , though more knotty , can also signalize gigantic or mastodon tusk from elephant .
These ancient pearl can often have racy - fleeceable or brownish mar on the control surface bring forth by an oxidate atomic number 26 inorganic phosphate calledvivianite .
This was even if the stain is just seeable , radical - purplish ignitor will make it stomach out with a striking velvety - royal appearing .
Even if elephant bone were likewise discolor — though in its born body politic , elephant pearl will not exhibit the same stain — it would not show the characteristic fluoresence of vivianite .
This was with late bone law pass down by fish and wildlife grey the line between elephant and ancient bone , it is potential the law may give union broker the right hand to clutch knife and material that can not be prove as straight-out bone but but have the bone expression .
As a answer , if you own tongue with ancient pearl handle , have an at least a worldwide cognition of how to distinguish elephant from ancient pearl could preserve you from stimulate your knife seize , from being fin or both .
