Mazanec
spending too much on rocks
Member since March 2004
Posts: 355
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Post by Mazanec on Sept 24, 2004 12:09:15 GMT -5
Are apache tears still being created in modern eruptions?
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Post by rockyraccoon on Sept 24, 2004 19:59:43 GMT -5
i have no idea but that's a good question.
kim
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Mazanec
spending too much on rocks
Member since March 2004
Posts: 355
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Post by Mazanec on Sept 25, 2004 12:14:19 GMT -5
One clue is if they are unique to one location, or found in several places. Any answers?
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Post by rockyraccoon on Sept 25, 2004 18:09:40 GMT -5
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Mazanec
spending too much on rocks
Member since March 2004
Posts: 355
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Post by Mazanec on Sept 26, 2004 5:31:42 GMT -5
I thought the other point about apache tears was the shape...they look like big teardrops. A slab of black obsidian would not be a "tear". Are these other locations drop shaped deposits?
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Post by rockyraccoon on Sept 26, 2004 10:29:15 GMT -5
if you go in and look at banjo's post about superior arizona under locations he shows the apache tears rough and they are not tear shaped. they are pebbles of lava that spewed out, came down like rain and cooled rapidly. the indians said this was the tears of their ancestors. anyway my guess is that they can be found anywhere a volcano erupts.
kim
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Mazanec
spending too much on rocks
Member since March 2004
Posts: 355
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Post by Mazanec on Sept 29, 2004 3:16:35 GMT -5
I came across a reference to Apache Tears from Utah, so I guess you are right. Thanks!
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deepsouth
fully equipped rock polisher
He who rocks last rocks best
Member since January 2004
Posts: 1,256
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Post by deepsouth on Sept 29, 2004 3:39:13 GMT -5
Hi Mazanec
I have climbed to the top and through the crater of a NZ volcano :" Tarawera" which last erupted on june 10 1886.
I have found pieces of obsidian on my way up , and in the crater I found glassy bits within the cooled lava , but that did not look like obsidian. It will have to do with the way it cooled. My understanding is that :" Apache Tears " will still be formed during eruptions. But I don't know if it will happen with every volcano and/or every eruption.
Jack
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JKowalski33
spending too much on rocks
Member since August 2004
Posts: 451
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Post by JKowalski33 on Sept 30, 2004 19:31:52 GMT -5
so if a volcano errupted, within days after some of the lava cooled there could be newly formed apache tears or other kinds of obsidian? I find it odd that obsidian could form so fast, when most other rocks takes millions of year to become the way they are....
by the way, have you guys heard about mt st helens recently? I don't know if its national news, but over here in oregon (northwestern region) its on our news a bunch.
There have been increasing amounts of earthquakes happening, and yesterday they said that there is an average of 4 per minute. also they are rising in intensity on the richter scale too. The lava dome in the crater on top has slightly buldged too. I hope it errupts!! if it does, i don't think it will have much lava, probabaly more like last time when it was just lots of ash and more explosive
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Post by cookie3rocks on Sept 30, 2004 20:32:49 GMT -5
I have seen that on the news. Maybe it will rain Apache Tears ;D
cookie
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shorty
spending too much on rocks
Member since December 2003
Posts: 392
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Post by shorty on Sept 30, 2004 21:36:06 GMT -5
hi all well we will maby find out if st helens farts up . we can all meet there and go hunting hahaha shorty
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Post by creativeminded on Oct 1, 2004 9:06:28 GMT -5
That's cool, I looked up Colorado and to my amazement they had listed one of my families favorite camping places, Ruby Mountain. I have mentioned that place to many people that either live in CO or have visited there often and they didn't know where Ruby Mountain was. Now I am dreaming of a trip back to Ruby Mountain.
Tami
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JKowalski33
spending too much on rocks
Member since August 2004
Posts: 451
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Post by JKowalski33 on Oct 1, 2004 16:43:21 GMT -5
well it errupted today, it wasn't that spectacular. just some steam then followed by ash. I dont think any neat rocks were formed by its erruption , maybe next time....
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Mazanec
spending too much on rocks
Member since March 2004
Posts: 355
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Post by Mazanec on Oct 3, 2004 5:28:46 GMT -5
My understanding is that obsidian forms when lava is "flash frozen" and does not have time to form a crystaline structure. It is what is called "amorphous". Like glass, it is really a supercooled liquid...a liquid with a nearly infinite viscosity. Indeed, it IS natural glass. And I hear you got your wish about Mt. St. Helens!
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