Topic 3 of 99: Rock Hounding: Where do you go and what do you find there
Sat, Jul 10, 1999 (19:28) |
Marcia (MarciaH)
Share your favorite places for finding just the right specimen
35 responses total.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 1 of 35: Marcia (MarciaH) * Sat, Jul 10, 1999 (19:38) * 3 lines
On the Island of Hawaii in the Hawaiian Islands, there is lava so fresh it is still molten. Perfect specimens of a'a and pahoehoe lava is everywhere on the flanks of Kilauea, but it is very bad luck to take it with you.
Other places on the island you can find peridotite (chunks of the Earth's mantle brought to the surface during explosive eruptions); obsidian deposits on Hualalai; and black and green sand beaches - the latter is entirely made from tiny crystals of olivine, the non-precious form of Peridot - August's Birthstone.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 2 of 35: wer (KitchenManager) * Sun, Jul 11, 1999 (11:38) * 1 lines
so how many types of lava are there?
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 3 of 35: Marcia (MarciaH) * Sun, Jul 11, 1999 (13:32) * 1 lines
Two types of surface lava flows: a'a which is clinkery and jagged on the surface while having a very dense hot core which can be many meters in thickness. This is the flow which mows down existing structures by the sheer force of its weight and momentum. It is is pasty in texture and relatively slow-moving. The second type of laval flow is pahoehoe which is much less vicsous,is flat or ropy when it solidifies, and can flow down a mountain in great volume and with considerable speed.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 4 of 35: Marcia (MarciaH) * Sun, Jul 11, 1999 (15:48) * 2 lines
Other forms of lava are Ash,Pumice and Pele's Hair. Ash looks like fine gray grit and is ejected during explosive eruptions - such as Mt St Helens' recent eruption. Pumice resembles a molasses sponge which is glassy and crumbly here, but on other volcanoes can be gray. It is light with a lot of air mixed into it, and it often floats on the water. Pele's hair forms during episodes of high fountaining. Our lavas are silica-rich, so these are like spun glass and again the color of m
lasses. It can be carried long distances on the wind. You do not want to be in the fallout zone with this stuff. When it gets down your neck it is most unpleasant. I can vouch for that! (Pele is the Hawaiian Goddess of the Volcanoes.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 5 of 35: Marcia (MarciaH) * Wed, Jul 14, 1999 (20:24) * 2 lines
Wolf set up a Rock Collecting Topic in the Collecting Conference for me. We will continue it here, but that is a good place to start. Please check it out, and check the rest of her other topics, as well.
http://www.spring.net/yapp-bin/restricted/read/collecting/41
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 6 of 35: Gi (patas) * Tue, Jul 27, 1999 (09:21) * 2 lines
I had no idea about all these kinds of lava. Mine is not a volcanic country, except for the Azores islands. My knowledge of eruptions is better related to the Ancient History - Pompeii and Herculanaeum, which I have visited.
I don't usually collect things, much less rocks, but found some very pretty stones on a beach in Cyprus and brought some back home. They look better wet than dry. They are all different, and I'm sure some contain iron, because I built an artificial aquarium around them, with glass fish, and there is rust at the bottom!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 7 of 35: Wolf (wolf) * Tue, Jul 27, 1999 (10:52) * 1 lines
that sounds way cool gi!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 8 of 35: Marcia (MarciaH) * Tue, Jul 27, 1999 (13:17) * 1 lines
Nice effect, Gi. If you want them in a dish and looking wet, dilute colorless nail polish and coat them. They will look wet without the fake shiny look that spray acryllic gives, and it might seal in the iron.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 9 of 35: Gi (patas) * Tue, Jul 27, 1999 (14:28) * 1 lines
Can I do that and still put them in the water?
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 10 of 35: Marcia (MarciaH) * Tue, Jul 27, 1999 (14:38) * 1 lines
Sure! To insure they do not peel, wash them in detergent to remove any oils and be sure they are thoroughly dry before coating. Thin the polish with oil-less thinner or remover.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 11 of 35: bernice arellano (Banise) * Tue, Jul 27, 1999 (17:15) * 1 lines
hi
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 12 of 35: Marcia (MarciaH) * Tue, Jul 27, 1999 (17:29) * 1 lines
Aloha Bernice...are you new here? Welcome, if that is so, and stay a while.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 13 of 35: wer (KitchenManager) * Tue, Jul 27, 1999 (17:30) * 1 lines
yes, please!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 14 of 35: Wolf (wolf) * Tue, Jul 27, 1999 (18:24) * 1 lines
yes, hi bernice!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 15 of 35: Marcia (MarciaH) * Tue, Nov 9, 1999 (00:47) * 1 lines
One really good place to rockhound (where you can go and what you find there)is a museum. If you are new to the area in which you will be hunting for specimens, visit the local museum and look at their collection. Note the textures and note the names. They might even have a little booklet you can obtain for a small price. Pictures to follow of just such a trip...
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 16 of 35: Marcia (MarciaH) * Sat, Feb 26, 2000 (23:20) * 3 lines
Ok, Mike...You need a piece of Peridotite? I can send you a chunk and some lava bombs - all from Mauna Kea - or anything else Hawaii-igneous. I am rather hesitant to send you anything from Kilauea or Mauna Loa. They are active and I worry about sending you bad luck.(Yes, I am a scientist first, but I have a box of rocks which was recently shipped to me from Canada from someone who took them home and had appalling luck "as a result." I figure...just in case...it is better to err on the side of caution!)
You cannot believe how delighted I am that you finally found your way here. It is the middle of the night for you and I cannot wait for you to wake up and boot that computer!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 17 of 35: Marcia (MarciaH) * Sat, Feb 26, 2000 (23:22) * 1 lines
Looks like I'd better get out David's specimen pix and post them...as I promised to do in November!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 18 of 35: Wolf (wolf) * Tue, Mar 14, 2000 (21:26) * 1 lines
that box of bad luck lava wasn't from this guy we saw on tv who took some as a souvenir? (can't remember anything about him or where he's from). he said everything went on the fritz after he took that stuff. as soon as he sent it back, his luck changed back to good. *amazing*
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 19 of 35: Marcia (MarciaH) * Tue, Mar 14, 2000 (21:38) * 1 lines
I have a box from Canada which we will take to the volcano...the person who collected it had a terrible time....Hope she is doing better. Anne Hale knows of another person who took some and has had appalling thing happen - but he did not know about the curse. Ignorance of the law not being an adequate excuse extends far beyond the legal system! Notice, Mike did not take me up on my offer?!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 20 of 35: Marcia (MarciaH) * Tue, Mar 14, 2000 (21:39) * 1 lines
Not that I know of, the sender has not been on tv, but it happens a lot. The park gets dozens of return boxes during the year!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 21 of 35: Wolf (wolf) * Tue, Mar 14, 2000 (21:41) * 1 lines
haha! they should put them on display to show how many people didn't believe the curse and found out the hard way! maybe it could prevent future lava removal!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 22 of 35: Marcia (MarciaH) * Tue, Mar 14, 2000 (22:19) * 1 lines
They do, actually, and sample letters which outdo all soap opera stories. Incredible - they think just the other guy is superstitious! Until ill befalls them...!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 23 of 35: Marcia (MarciaH) * Tue, Mar 14, 2000 (22:22) * 1 lines
Funny thing is, David has my obsidian collection from all over the world including some from the Urals. Nothing bad has happened to him, but he also has not one bit of Hawaiian Lava in his collection! Core drillings from the coral reefs, but, no igneous rock!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 24 of 35: Marcia (MarciaH) * Sat, Dec 1, 2001 (00:20) * 4 lines
Ok, who is the Mike who needs a chunk of the mantle (peridotite)? It is another
2 years later and I am I concerned about sending stuff. Superstitious? Heavens, no! I'm trained as a scientist. However I also have a box of requests for a young man in Ireland. I'd be heartbroken if I brought him bad luck!
I do need to hear from Nick's father. Are you certain its ok to send it to you? I'll not feel the wrath of your gods, my gods and the One True God?
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 25 of 35: Michael McNeil (Weatherlawyer) * Mon, Jan 21, 2002 (19:49) * 10 lines
Topic 2 of 63 [Geo]: Vulcanism
Response 704 of 705: Marcia (MarciaH) * Sat, Jan 19, 2002 (15:49) * 1 lines
You can't believe how much like our lava flows this Goma eruption is! Happily we are better prepared for such activity. Thanks for the further article. I love watching it on the News on television. I can almost smell it!
I'll not feel the wrath of your gods, my gods and the One True God?
Please remove all my posts from this site.
Mike.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 26 of 35: Marcia (MarciaH) * Mon, Jan 21, 2002 (20:04) * 3 lines
You have never lived with other ethnic people, have you? Not even I venture into the volcano eruption area without an offering and prayer for safe-keeping. We each seek the Almighty in our own way. I'm sorry you were offended.
Aloha Mike, I wish you well. Your posts will be deleted. Your topics as well.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 27 of 35: Curious Wolfie (wolf) * Mon, Jan 21, 2002 (23:06) * 2 lines
marcia, i found a place abundant with rocks. we went to white's point (a little look-out site just north of here). the drive down to the water was really neat because it was carved out of the rock. you could see the history of movement within the walls as the lines of layer upon layer curved all over the place! down by the water mixed with the leftover concrete (what these slabs were there for are beyond me) were lovely round rocks smoothed with each passing flow of water. and further down the "beach" was what made me think of lava flow that had hardened and had been fossilized. don't know if that's possible but the rocks must've been there for a while as trenches were literally dug into the rock by the constant flow of the tides. oh we had fun climbing up and down these things and checking out the tidal pools with wildlife in them. we didn't take anything because some guy was yelling over a loud speaker that we weren't to take anything from the water (not yelling at us). seems people were taking animals o
t of the water to take home with them (hermit crabs, star fish). i will take pictures next time to show you these unique rocks!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 28 of 35: Marcia (MarciaH) * Thu, May 16, 2002 (18:18) * 4 lines
* Mercury meteorite puzzle *
Researchers say a strange rock found in the Sahara might be the first known rock from Mercury.
Full story:
http://news.bbc.co.uk/go/em/-/hi/english/sci/tech/newsid_1991000/1991394.stm
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 29 of 35: lance8 (lance8) * Wed, Apr 2, 2003 (22:19) * 1 lines
I'm totally unsure of where any of you live at, but the mountains of North Carolina have an unbelieveable amount of material for hounds, including gold, emeralds, sapphires, and more quartz and calcite based stones that I can count. Similar finds are probably found in Virginia and South Carolina. The key is which side of the Appalachins you're on. West is barren, but East is rich in places to go sniffing about.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 30 of 35: Marcia (MarciaH) * Sat, Apr 5, 2003 (20:56) * 1 lines
Oh yes, I have been in your presence when enticing me with goodies found underground in North Carolina. I think I should visit your state soon to see it for myself. *;)
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 31 of 35: Marcia (MarciaH) * Sat, Apr 5, 2003 (20:58) * 2 lines
Alas, I will always be on the west side from now on (of the Applachians).
On the eastern side I found a moct lovely clear mass of garnet the last ice age placed in the soils underlaying our flower beds. I still have it.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 32 of 35: Curious Wolfie (wolf) * Thu, May 1, 2003 (19:14) * 3 lines
marcia, you've already moved????
i find some very interesting rocks here in SoCal. Don't have a clue what they really are but i like the layers and how the ocean has carved smooth their edges.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 33 of 35: Marcia (MarciaH) * Fri, May 2, 2003 (18:56) * 5 lines
No, Wolfie. I am in a holding pattern in Hilo, alas, but watching Louisville on the TV as the Pre Kentucky Derby hype builds up. I stayed 4 blocks from Churchill Downs! I do know the area!
Beach shingle? It is a fine slate of shale in very fine layers. Since is ia made out of metamorphosed mud, it tends to be very soft.
Thanks for writing! Suddenly Geo has gone silent!
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 34 of 35: Curious Wolfie (wolf) * Sun, May 4, 2003 (11:05) * 1 lines
no beach shingle....these are rocks! *laugh* the whole tide pool area is rock (though i think i found some petrified wood). but the rocks are smooth and you can see the layers that made them up. lots of egg shapes too. i have the bigger ones on my windowsill and a jar of the smaller ones.
Topic 3 of 99 [Geo]: Rock Hounding: Where do you go and what do you find there
Response 35 of 35: Marcia (MarciaH) * Sun, May 4, 2003 (16:52) * 3 lines
OOOH!!! (slate can appear like that, too) but now I suspect it is fossiliferous limestone like in Kentucky.Let me do a bit of researching on the "Roadside Geology of California" book I bought when I was visiting Point Reyes National Park.I do not think it is limestone(that's what is in KY) However, Sandstone is not out of the question. Looking! (Email me the precise location if you can and I can tell you definitely, if you'd like!)
What do those "eggs" look like? Have you found any broken ones so we can see what is inside? You might really be onto something. The edge of your Continental plate is not where it was when the dinosaurs were around. It may be a REALLY important find!
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