cigarboxrock
starting to shine!
Member since December 2017
Posts: 25
|
Post by cigarboxrock on Mar 17, 2018 13:14:57 GMT -5
Our guess, but no clue as to location, state California or ? Trying to find out what it is called and where it comes from...? Warm Regards, Ben CigarBoxRock Lapidary
|
|
Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
|
Post by Fossilman on Mar 17, 2018 13:38:08 GMT -5
Wow,looks like cross between poppy jasper and pudding stone!!! Hey Mel !!!!
|
|
NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,630
|
Post by NRG on Mar 17, 2018 14:03:54 GMT -5
|
|
Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,463
|
Post by Sabre52 on Mar 18, 2018 9:28:47 GMT -5
I have a block of that in my shop I got from Ron's Rockshop at Camarillo. He identified it as puddingstone from Australia. Don't know anything else about it as I've been unable to Google any further info that would confirm this origin...Mel
|
|
cigarboxrock
starting to shine!
Member since December 2017
Posts: 25
|
Post by cigarboxrock on Mar 18, 2018 9:59:22 GMT -5
I have a block of that in my shop I got from Ron's Rockshop at Camarillo. He identified it as puddingstone from Australia. Don't know anything else about it as I've been unable to Google any further info that would confirm this origin...Mel c
|
|
cigarboxrock
starting to shine!
Member since December 2017
Posts: 25
|
Post by cigarboxrock on Mar 18, 2018 10:15:23 GMT -5
CD - I think you are on right track but Puddingstone seems to be made up of whole pieces and this Jasper broken and is surrounded in quartz like matrix. We inherited a huge chunk that was in tank of a 30 - 40 year old 36 inch slab saw. Location was Near California/Oregon line so was assuming one of those states? I appreciate the input!
|
|
Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,463
|
Post by Sabre52 on Mar 18, 2018 10:46:35 GMT -5
Yeah, the problem with purchased material is you are dependent on the seller for identification, origin etc. Puddingstone is a conglomerate formed of mixed loose jasper or other types of pieces, sometimes rounded by erosion first and usually heterogeneous in nature, and then sealed by another material , often silica or calcite. Think of concrete. Brecciated jasper is a hunk of jasper that has been shattered, often by seismic forces and then rehealed by chalcedony while in situ. Breccias often occur in a large vein like Stone Canyon jasper and the pieces in the breccia are usually homogeneous in nature because it's essentially one shattered stone.
I would consider the pictured example to be a conglomerate rather than a breccia as the fragments included appear more heterogeneous, composed of multicolored jasper fragments and some quartz fragments and the cementing material in your example and mine is not a chalcedony infilling of fractures but rather a siliceous mix of come kind, but that's just my personal opinion.
Oddly, when I was searching for a origin for this material I found one post of a cabochon saying it was a breccia from Lavic Siding. Not saying it could not have come from there, but I've hunted Lavic a lot of times over my fifty years of collecting and have not seen that type of breccia/conglomerate from that site. Also, generally, Ron of Ron's Rocks, is a pretty knowledgeable guy as for as origins are concerned....Mel
|
|
NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,630
|
Post by NRG on Mar 18, 2018 11:47:02 GMT -5
I'm with Sabre52. That is definitely not Lavic material. Lavic has similar looking breccia, but, the cement bonding the pieces together is also colored jasper. Here is a piece of material I know exactly where it came from. I hounded it. It's Lavic from a non traditional area.
|
|
cigarboxrock
starting to shine!
Member since December 2017
Posts: 25
|
Post by cigarboxrock on Mar 18, 2018 17:22:52 GMT -5
Sweet! Would you say your piece is similar to California Stoney Creek Jasper and variety’s?
|
|
Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,463
|
Post by Sabre52 on Mar 18, 2018 18:43:28 GMT -5
Not to jump on NRG's post but yes Lavic is a true brecciated jasper/agate similar to Stoney Creek or Stone Canyon chert but actually much fancier IMHO as far as combinations of colors go and a big difference is the lack of fractures, as Lavic seems to be a less seismic zone and the jasper from there is seldom heavily fractured like California Coast range cherts are. Lavic also has some really nice true moss and plume agates that are a lot different than the coast range cherts. The coast range stuff is chert because it's mainly of Franciscan Formation marine origin while Lavic is a volcanic deposit and, far as I know, a true Jasper/agate....Mel
|
|
NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,630
|
Post by NRG on Mar 18, 2018 22:53:00 GMT -5
Sweet! Would you say your piece is similar to California Stoney Creek Jasper and variety’s? If you are asking me? Then, no. Not similar at all. I'll let Mel's reply stand up for explanation.
|
|
Tommy
Administrator
Member since January 2013
Posts: 12,663
|
Post by Tommy on Mar 19, 2018 10:14:45 GMT -5
Not that Mel's answer needs any building on but yeah - these two materials are not even close in composition. The Lavic I've seen and collected is always a dark red to green iron soaked material - more jasper than agate and almost always bleeds red when you cut it. With Lavic it's hard to see sometimes where the basalt ends and the jasper begins.
Materials from Stony Creek/Burris Creek/Black Butte area are completely different - mostly based in quartzy yellow and red jaspers, almost always hematite laden, and brecciated with what I call dirty agate inclusions.
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Mar 19, 2018 19:00:46 GMT -5
Conglomerate
|
|
cigarboxrock
starting to shine!
Member since December 2017
Posts: 25
|
Post by cigarboxrock on Mar 19, 2018 20:56:00 GMT -5
Fosselman,NRG,Sabre,Tommy,and Hooked on Rocks - Good stuff, lots of helpful information, great group! Since there was other yellow Stoney Creek material pieces in the bottom of the old saw I thought the origins may have been in close proximity to each other in California but even in the old days rock hounds traveled and traded. Thanks a bunch!
|
|