Laurel Family cobble from Yellowstone River POLISHED PETRIFIEDE WOOD

Description

Lauraceae Family wood (Laurinoxylon sp.)
Absaroka Supergroup, Eocene
Yellowstone River gravels, Montana
** Nearly every rockhound and collector of petrified wood is familiar with the beautiful lapidary material called "Montana Agate".  But, many don't realize that all Montana Agate started out as enormous agate limb casts that eventually weathered out, broke up and eroded into the Yellowstone River.  The clever rockhounds use a pontoon raft to slowly float down the Yellowstone River sections to the west of Miles, Montana searching the bottom and the gravel bars for the beautiful agate.  But, there are also cobbles of petrified wood that have the same origins as the Montana Agate in the Eocene Forests destroyed by volcanic eruptions.  So, the really eagle-eyed field collector on such a raft trip also keeps an eye out for cobbles of petrified wood along with the agate and other rocks.  Every once in a while, a nice cobble comes out that is from the core of the tree - that is to say it has a center.  And that is exactly how this interesting sample was discovered.  As collectors, we endeavor to have a center and attendant growth rings in as many of our specimens as possible.  This one will satisfy that desire.  Fortunately it is an "end-cut" so you can positively see also that it was a river washed cobble.  It measures 3.5" x 2.75" on the polished face and the end cut up measures up to 1.5" thick.
We specialize in petrified wood and plant fossils which are accurately identified as to locality of origin and family, genus or species. We don't guess and when we don't know, we say so! Your specimen will come with a label identifying the specimen, the locality where it was collected, the formation and age of the material and any other pertinent information we have gleaned from our literature search.
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