Retinite

Retinite is resin, particularly from beds of brown coal which are near amber in appearance, but contain little or no succinic acid. It may conveniently serve as a generic name, since no two independent occurrences prove to be alike, and the indefinite multiplication of names, no one of them properly specific, is not to be desired.{{Cite encyclopedia |title=Retinite|encyclopedia=The system of mineralogy of James Dwight Dana 1837-1868 |publisher=John Wiley & Sons |year=1895 |edition=6 |page=1004 |last1=Dana |first1=James Dwight |author-link1=James Dwight Dana |last2=Dana |first2=Edward Salisbury |author-link2=Edward Salisbury Dana |url=https://babel.hathitrust.org/cgi/pt?id=uva.x002308182&seq=1078 |language=en |location=New York |oclc=10749387 |hdl=2027/uva.x002308182}}{{Cite EB1911|wstitle=Retinite|volume=23|page=203}}

Retinite resins contain no succinic acid and oxygen from 6% to 15%.{{cite web |author= |title=Retinite|url= https://www.mindat.org/min-9143.html/ |website=Mindat.org|publisher=The Hudson Institute of Mineralogy|location=Kewsick, VA, USA}}

Image:Borneo amber from Beradai Coal Mine, Merit-Pila, Sarawak.jpg