Just never know what you will find in the ground, any ideas on this ???

[Ashman]

Was out prospecting in a creek and this ended up in my classifier?

It is real porous and then the more solid areas are blue and some are light blue. Just curious only cause it looks like no other rock I have come across before. Any ideas, it does have a little weight to be as small as it is.

 

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[eclipsegt3]

found a lot of rocks like this on the railroad tracks

 

[NOLA_Ken]

Could be slag. Do the blue areas look glassy at all?

 

[Ashman]

No not at all. I found it on the Southeast end of Angeles National Forest, CA digging in a creek, not sure if the area of where it came from helps any.

 

[SODABOTTLEBOB]

The pourous aspect suggest "Volcanic"

SBB

 

[taz42o]

Basalt.

California Geological Survey - Geologic Map of the San Bernardino Quadrangle

 

[Ashman]

Yep kinda was my thought to and someone else mention that as well but from what I can see or read on the area there is nothing volcanic around there. But hey I am so new to all this who knows what was here years ago or maybe someone had it in their pocket and dropped it there for some bone head like me to come along and start a thread like this, lol….

 

[diggummup]

Looks like basalt but I don't know what the inclusions are.

 

[SODABOTTLEBOB]

Basalt from Wikipedia ...

Basalt - Wikipedia, the free encyclopedia

 

[SODABOTTLEBOB]

More ...

CVO Menu - America's Volcanic Past - California

[SIZE=+3]Los Angeles Vicinity[/SIZE]

Peninsular Ranges:[SUP]17[/SUP]

The Peninsular Ranges are a series of ranges separated by longitudinal valleys, trending NW-SE, subparallel to faults branching from the San Andreas Fault. The trend of topography is similar to the Coast Ranges, but the geology is more like the Sierra Nevada, with granitic rock intruding the older metamorphic rocks. The Peninsular Ranges extend into lower California and are bound on the east by the Colorado Desert. The Los Angeles Basin, and island group (Santa Catalina, Santa Barbara, and the distinctly terraced San Clemente and San Nicolas islands), together with the surrounding continental shelf (cut by deep submarine fault troughs) are included in this province.

 

[Ashman]

Hmmm very interesting about Basalt thanks for the reply back. My little rock looks just like one of their pics posted ( File:VessicularBasalt1.JPG - Wikipedia, the free encyclopedia ). Just add a few little blue rocks to it and that would be it. Very cool info thank you.

 

[Monty]

Petrified dinosaur turd? Monty

 

[Dig Daddy]

Looks like Lava Rock, pitch it in a bucket of water and see if it floats. No BS...