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Black Widow on Tiger Chert

Black Widow on Tiger Chert
Black Widow Hunting on Tiger Chert

Black Widow for Halloween

I had turned over this big boulder of Tiger Chert (kinda rare) out by a building leading to this little Black Widow Hunting (me about then) . The boulder of Tiger Chert about 90 pounds (I carried it down a pretty good mountain in a frame pack…. I know lol). So you reach under it to tip it over right?…… Up here you reach under it with gloves on and here is one (just one) of the reason why. Working bare handed turning anything over in Wyoming/Montana is not necessarily the right thing to do lolol.

This Black Widow hunting on Tiger Chert had another agenda than I did. I wonder if it’s like the ground hog and we’re in for an early winter if it see’s it’s shadow? I’m pretty sure it saw that shadow…. Well I know for a fact this gal now resides in an escape proof glass terrarium down in my green house now where she is going to be in a few photosessions I hope. She gets fed a cricket or so a week from the green houses endless supply of crickets lolol. Ultra macro work on her might just be an interesting time spent with a camera dead winter .

Tiger Chert for Rockhounders

As you might expect, the rock is exotic. Oil Chert or Tiger Chert is a fairly rare variety of Silicate mineral.. Named for the alternating bands of light and darker browns or tans, the banding reflects the yearly deposition of sediment into the bottom of prehistoric Lake Gosiute. Outcrops of the material usually occur south and west of Rock Springs as well as a few other places in the Green River Basin. I found this WAY north and east of Dubois Wyoming so this one is an outlier. It was up high when I found it too. Big effort to retrieve it and it still follows me around.

The concoidal fracture and homogenous nature of Tiger Chert made it a favorite of flint nappers throughout the period of human habitation in North America. It occurs in archaeological sites of all ages. It’s beautifully banded, reminds me of tree rings but those were yearly mudstone lake sediments that were literally “replaced” by silicious chert in the diagenetic history of the rock deep in the Wind River Ranges. Many mis-identify it as petrified wood. It’s very similar in composition with most petrified wood but it didn’t used to be wood 🤔

Location: Bliss DInosaur Ranch, Wyoming/Montana borderlands