Questions tagged [identification-request]

For help in identifying objects such as clouds. Please include as many details as possible. DO NOT ASK ROCK IDENTIFICATION REQUESTS — rock identification requests are off topic.

33 questions with no upvoted or accepted answers
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Rock ID: brown, magnetic inclusion in Carpathian amethyst geode

What I believe is an amethyst geode (roughly 6" = 15.24 cm across) from somewhere in the Carpathian Mountains contains an oval-shaped inclusion of material with what look like pits of green ...
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1answer
115 views

Can anyone help me identify this rock found in Tulsa Oklahoma?

I was working in my front yard in Tulsa Oklahoma and ran over this rock with my lawnmower. It was logged in the ground enough I didn’t see it. It’s 2.5 inches in length. Black in color with what ...
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Identification: Greenish Greek stone

Volume: 100ml +- 2% (yes, I couldn’t believe it either); Mass: measurement pending, but above 200g I just bought a mineral identification book and it says to take a streak. I tried with tiles at home,...
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What is this complex looking rock with lavender and yellow crystal areas on a lighter-colored matrix?

New to the forum and in search of a little help to id this specimen. Not sure of the specimen’s origin location. It has shiny, lavender colored crystals, as well as yellow-greenish crystals, on a ...
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60 views

What is in this rock?

There were many, many examples of this, my photo simply shows a situation where I had even light and time to take a photo without making anyone wait for me. The basic rock is obviously sandstone. ...
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Identify tiny green crystals on a pinkish/yellowish rock coming from Epupa Falls on Kunene River North of Namibia

That my first post : I'll try to follow the guidelines. 1) I provide 2 pictures of my sample : the first one from the tiny green crystals themselves, and the second one from the rock supporting the ...
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Rock identification

Hardness 5 to 7. Colour brown, however turns grey with polishing. Lustre earthy doll, changing to shiny metallic after polishing. Gravity heavy. Not magnetic. Location eastern coast of Australia ...
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274 views

What kind of rock/mineral is this pinkish stone I found in Colorado?

I found this in my backyard and would love to know what I'm looking at. It reminds me of a fossil. I live in Colorado, Denver-metro. The sample is about 2 inches top to bottom, weighs maybe .5 lb, ...
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What is this 6in Nor Cal beach boulder with waxy veins?

Nor Cal beach @ low tide. 6in, photographed wet, post acid wash. Veins look waxy.
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284 views

Is this a conglomerate type sedimentary rock?

This is my first attempt at studying geology. A year ago I found this stunning rock in the Maumee River here in Northwest Ohio. The rock is very smooth in texture, measures approx 2 cm, and was ...
2
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1answer
41 views

“Obicular” structures in basalts

I found spherical or globular structures, structures in basalts of a greenstone belt which underwent alteration and deformation. However, in thin section, these structures have undeformed pyroxene and ...
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131 views

Green Rock Identification

This rock was found in the highlands of Scotland in the mountains.It is 2 1/2''x2 1/8''x 1'' it has a density of 2.95 leaves a clear streak weighs 130 grams and a hardness of 6 on Moh's scale.This ...
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2answers
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Rock ID: Soft black rock from Skegness UK

I found this half submerged in Skegness beach, UK, on the sea front. Color: Black Lustre: Dull matte Texture: Very grainy Weight: 921 grams. Seems heavy Size: 6 x 4 inches or 120 x 150mm MOH scale: 2....
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109 views

How could have this rock formed? - Penny inside rock, mostly iron

I was walking along a beach (in Southern California) and found this rock on the ground, and there were none like it on the beach. It is composed of mostly rusted iron, and a magnet will stick to most ...
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What causes frozen “shooting water” spikes from ice covered water in the winter?

I have seen things like this appear once or twice on cold winter mornings, a frozen spike of water from an ice-covered container or very small body of water (puddle). I found the photo below at Mel ...
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145 views

Rock ID: black, white and orange, from Malaga, Spain

I picked up some very interesting rocks and pebbles on the beach in Malaga, Spain this summer. They are predominately flat and colored dark grey crisscrossed with stripes of orange and white. The dark ...
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126 views

Rock I.D: Plattsburgh, NY, Heavy, Metallic Luster

Can anybody help me identify this? It was found in a friends yard. It’s very heavy, non-magnetic, and shines like silver. The rock was found by a friend in the yard by itself. Seems extremely hard, ...
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55 views

Is this Basalt, Ophitic or Conglomerate?

This rock was picked up this summer at High Rock in Keeweenaw Co. MI. I'm sure it's basalt, but is odd the aggregate when chipped is tan to white inside and contain a lot of tiny crystals. The ...
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362 views

Is this Black Serpentine?

I found this rock at a lake edge in Co. Sligo Ireland,its shiny black,leaves a black streak, weighs 320 grams displaces 125ml of water which gives it a density of 2.56 https://www.youtube.com/watch?v=...
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48 views

What is this dull whitish rock with ornate black patterns found in the Arkansas Crater of Diamonds?

I found this rock while wet sifting dirt brought back from the Arkansas Crater of Diamonds. It looks as if it is hand painted. It is smaller than my pinky nail. It’s dull, and makes a chalk-like mark ...
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27 views

Can Anybody give me more info on this brecia?

Hi I have this boulder as part of an arts project in the North East of England. It was taken with Premission from a beach at the mouth of the river Tyne. At first I thought it may have been a glacial ...
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127 views

What name of rock is it?

I found it in desert, there is not any evidence of igneous or metamorphic rocks around it, it's density is between 3.5-3.9, some magnetic, some parts have pyrite minerals, streak is dark brown, luster ...
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40 views

Interpreting an outcrop of a thick pure silica bed in a volcanic setting

How can a nearly pure silica bed with 250 m x 50 m x 1.5 m dimensions be interpreted in a volcanic/pyroclastic setting? Here is a photo of it.
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38 views

A chemical formation or constructed by microorganisms?

This mineral formation was at the side of a fresh water canal in Gürpınar, Van, Turkey. It was dug out from the bottom of the canal. It is very brittle. I know that the natural water sources in the ...
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1answer
271 views

Metallic rock identification from Ontario Canada

This rock was found in Lake/Lac Clair near Sturgeon Falls Ontario Canada in about 2 feet of water next to the edge of the lake. It can easily fit in my hand. You can see a size comparison in the ...
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Theorist speculate about dozens of loud atmospheric booms across globe

Theorist speculate on the dozens of loud atmospheric booms across globe. Has any recognized institutions offered a plausible explanation as of now?
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121 views

What are these gray and white rocks that show some rust coloration which were found in TN?

I found it in a gravel parking area at work (TN). It isn't magnetic and does not produce a streak. The surrounding rocks looked like they were "rusted" by these rocks. The rock on the left has a white ...
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1answer
166 views

This rock I found in a park, Arizona, not sure what is

I'm not sure what this is, it's a rock, looks to be hand made into its shape, but I'm not sure. You can see it sparkle on the inside, there seem to be little crystals when the light hits it. It is ...
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3answers
87 views

What kind of red rock is this?

I don’t know much about were I live, I am from ny and only moved here a few years ago. I found it in Smithfield nc we’re I love with my dad and kids now.. I wish I had more information. Yes the rock ...
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1answer
130 views

Please identify this rock

I found this rock along the Illinois river basin in cave junction, oregon. It was laying on the top layer of a massive beach of rock. It's shape is what drew me too it, then after closer inspection ...
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1answer
82 views

Help identify my redbrown rock with crystal like formation on the inside

This rock is red/orange/brown in color. It is slightly clear/translucent when held up to light. Will not scratch with a knife. Has a crystal like structure on the inside.
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Caspian Sea oil deposits

Azerbaijan appears to have vast development in its oil sector. Images on google earth show oil platforms connected by road ways far out into the Caspian Sea of the coast of Baku. Why is the majority ...
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Identifying circle of light in night sky

I was recently reminded of when, while with some friends 20some years ago, we happened to look up and see a circle of what seemed to be light (in the sky of course). The circle was "empty" (only the ...