Anyone Have a clue what this rock is

[BRATTSO]

Hi found this rock at a garage sale and was wondering if anyone can tell me what it is?

The lady said she got out of russian river cloverdale

thank you Brattso

 

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[diggummup]

I agree with those that say it looks like slag glass. That was my first impression too, before reading their posts.

 

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[capt-zero]

Absolutely slag glass. The third picture confirms it with the air bubbles showing. No igneous crystal forms, that I know of, with air bubbles in it.

 

[bigfoot1]

I'm sticking with obsidian if the info about its source is correct.link is to an archeological report from that area.The obsidian from the russian river basin was actually collected and traded by the natives with other tribes...http://www.scahome.org/publications/proceedings/Proceedings.01Rondeau.pdf


also...The Caballo Blanco Biface Cache, Mendocino County, California (CA-MEN-1608) [eScholarship]...

Every thought expressed on this thread is plausible and perhaps a trip to a local rock shop would be helpful.If you do get it checked out,please let us know.thanks.

 

[BRATTSO]

thank you i ewill let you know when i take it to a rock shop.

Capt the holes are from someone trying to drill in it i believe it definatly wasnt there when i got the rok I left it with my friend and it came back half the size and with holes

thank you all for help i appreciate it
Brattso

 

[woodstock]

Yes , I'm almost 100% positive it's glass now because of the nice pic's you posted . One picture has small air bubbles that couldn't possibly have formed on a semi-precious crystals or I should say I never seen them in natural Semi- Precious stones . And I grew up with a extreme rock hound and literally tons of stones.
IMHO , Woodstock

 

[kuger]

.......I am pretty familiar with every major obsidian source in Calif/Nev. and oregon,and have never seen Purple obsidian.

 

[pippinwhitepaws]

russian river purple stones - Bing Images

oh...some stones have inclusions...with contain water an other materials...bubbles, so rocks do have bubbles in them..even gemstones

http://www.bing.com/images/search?q=herkimer+diamonds&qpvt=herkimer+diamonds&FORM=IGRE

 

[kuger]

these are the "Clear Lake Diamonds" Clear Lake Diamonds: Clear Lake Diamonds mineral information and data.

Borax lake Obsidian is one of the few places in the US where a Gray Obsidian exists...Davis Creek being another

 

[pippinwhitepaws]

so kruger...are you in the redwoods?
spent a couple of years in redwood valley...strange smelling campfires up there...

 

[kuger]

so kruger...are you in the redwoods?
spent a couple of years in redwood valley...strange smelling campfires up there...

No,fortunately/unfortunately I am not....spent a lot of time up there though....I am a bit South East ,............that smell is our State Scent!!!

 

[bigfoot1]

purple obsidian does exist in california...Griffith's Royal Purple Obsidian Mine, Sugar Hill, Warner Mts, Modoc Co., California, USA......Obsidian Mines - Sierra Nevada Geotourism MapGuide ...... Obsidian Healing Stones | Obsidian Rocks | Snowflake Obsidian | Obsidian Sold By The Pound | Black Obsidian ...


and this......There are several types. As gemstones, these are usually cut into rounded cabochons or carved to show the optical effect to advantage. They are also occasionally found in high-end knapped arrowheads and blades. The background can vary in color from black to brownish with the glow flashing across the surface as the stone is turned in the light...

• Golden Sheen or Cat's Eye - reddish to gold, metallic flash. This variety is often seen in stones which have a brown or mottled brown and black background. When properly cut, it makes a very interesting display.
• Green Sheen - olive-green to slightly sea-green irridescence.
• Plum Sheen - rose to reddish-purple glow.
• Rainbow - layers of differently colored sheen are exposed by careful cutting. Quality stones come from Mexico, California and Oregon.
• Peacock - similar to Rainbow, but somewhat softer and usually with a less glossy polish
• Royal Blue and Royal Purple Sheen - this particular variety is from California, and the colors in good quality stones can be quite intense.
• Silver Sheen - silvery gray shimmer which, in the more desirable specimens, displays an almost metallic effect.
• Velvet - microscopic bubbles give the stone a matte surface (California and Mexico) in several shades.

 

[cti4sw]

I feel compelled to mention that obsidian is volcanic glass, since most of you seem to think it's "just" glass.

 

[cheese]

https://www.google.com/search?q=purple+slag&rlz=1C1ZMDB_enUS503US503&tbm=isch&tbo=u&source=univ&sa=X&ei=3oepUbzfLefIyQHq3IDYBg&ved=0CDYQsAQ&biw=1440&bih=763#facrc=_&imgrc=NYW0mpfClt6BAM%3A%3BiZZhJ_vL9Zjn4M%3Bhttp%253A%252F%252Fp2.la-img.com%252F648%252F40584%252F17454844_1_m.jpg%3Bhttp%253A%252F%252Fwww.liveauctioneers.com%252Fitem%252F13475918_seven-pieces-of-purple-transfer-staffordshire-china%3B282%3B188

 

[BRATTSO]

Hello Everyone
I found my camera so I took a bunch of pictures for everyone. Havent got to rock guy yet but soon

Brattso

 

[cheese]

In the one pic, it kinda looks like a dog, but it looks like slag in all the rest.

 

[bigfoot1]

look forward to rock shop opinion....interesting piece and good lookin dog

 

[kuger]

look forward to rock shop opinion....interesting piece and good lookin dog

x2!!!as said I have been all over collecting obsidian to knapp for many,many years(going next weekend!)and never ever seen anything like that

 

[pippinwhitepaws]

cool dogin...

 

[BRATTSO]

thank you everyone and my puppy says thank you to he is my armani puppy only 7 months old. I will let you all know what the rock guy says

 

[BRATTSO]

hello everyone

Itook my rock to a lady who goes to the rock hunting all over she has been doing it for years.

I showed her my rock and at first she said it was amethst but she couldn't figure out what the black was she said it might be obsidian but she wouldn't know why they were mixed. She was very puzzled her friend said the smae thing and I realized when she said the amethst suyrrounded by the black stone stone was so odd that we were standing in the shade. I told her to step into the sun and they both were amazed that the black was dark purple. They boith agreed it was amethst. They told me that they never seen one so big or so dark.

I asked them how they knew iyt was amethst and she said it had veins? and or grow lines which i am not really sure what that means. I am going to take it some other places as well maybe they are mistaken. Although they showed me a tiny piece of one and it look somewhat the same...im still not convinced

I will let you know when i get a few more opinions
Thank youi Brattso