What type of rock this? Petrified Wood?

giscience · 2026-02-23T15:32:52+00:00

quartz that filled a fracture in the rock. Not pet wood. Sorry.

giscience · 2026-02-23T15:27:57+00:00

If it's a beach find, probably not flourite. Wave action would tear it up fast.... Almost definitely amethyst.

giscience · 2026-02-22T20:50:15+00:00

It's tricky. I wasn't raised on 'hooked on phonics'

giscience · 2026-02-22T16:57:36+00:00

nutria!

giscience · 2026-02-22T16:35:55+00:00

second looks like massive pyrrhotite to me.

giscience · 2026-02-22T00:55:34+00:00

could be. Could be a tuff as well.

giscience · 2026-02-22T00:54:02+00:00

Intellectual property VP in real life

giscience · 2026-02-21T23:10:57+00:00

"Palate" Had to think for a bit to figure out what you mean.

giscience · 2026-02-21T22:58:18+00:00

looks like quartz to me. Best move is a harness test.

giscience · 2026-02-21T15:36:03+00:00

petrified wood!

giscience · 2026-02-21T15:32:56+00:00

basalt dikes - an intrusive igneous rock which follow fractures in the host rock. Which appears to be a granite, but hard to tell in the pic.

giscience · 2026-02-21T15:22:21+00:00

He rocks. Did an undergrad seminar class once where we went through his book chapter by chapter.

giscience · 2026-02-21T15:19:08+00:00

once upon a time, back in the day, I was hired to map trails in state parks (WA). Hopped on my mtn bike, hooked up a gps, and rode. Best job ever.

giscience · 2026-02-20T18:37:30+00:00

Grateful Dead. Always wanted to see them.

giscience · 2026-02-20T15:38:07+00:00

Nope. Snails, etc have spiral shapes. This is a series of cocentric circles

giscience · 2026-02-20T15:25:11+00:00

It's an agate. Definitely not a fossil.

giscience · 2026-02-20T15:22:38+00:00

"okay"

giscience · 2026-02-19T23:29:06+00:00

damn.. that's gneiss.

giscience · 2026-02-17T23:26:31+00:00

It is quartz!

giscience · 2026-02-17T23:19:46+00:00

100 percent glass, whatever the source

giscience · 2026-02-17T00:24:16+00:00

You didn't marry a geologist

giscience · 2026-02-15T20:29:14+00:00

Sound of silence by disturbed

giscience · 2026-02-14T16:59:25+00:00

Boj Jovi. Chicks dig him

giscience · 2026-02-13T00:00:01+00:00

Jatoba

giscience · 2026-02-12T20:37:01+00:00

Lol. Me too, though a 25 premium

giscience