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Questions tagged [identification-request]

For help in identifying objects such as rocks, minerals, clouds, etc. Please include as many details as possible.

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rock id:hard,green,other ones were around but not with black streaks [closed]

Located in vermilion river Lasalle Il. It is a green and has black streaks with what looks like air bubbles at the end.
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3answers
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how can a asterisk/star like crack occur on a rock?

how can a asterisk/star like crack occur on a hard pyroclastic rock? Could it caused by a meteroite or by some other mechanism? You may see the shape of the rock on attached photo.
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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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119 views

Is this Dragon Jasper?

Bought these rocks at a shop they were selling as Dragon Jasper,but when I density tested them they were 3.09 which I thought was a bit high for Jasper, and generally Dragon Jasper has Deep red veins, ...
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1answer
45 views

Is this an agate? [closed]

So I have found these in a creek there are some that look like this and I have broke them open and they were full of crystals these seem to small and I have tried cracking then and they wont budge I ...
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1answer
66 views

Rock ID: Very hard, green, slightly transparent, some gray parts on outside. found in South Korea

Hi! My name is Thomas, I am a senior student in Canada. I found this rock as a kid in Korea in a high mountain area. I was always wondering what this thing was. Its very heavy, and also very hard. A ...
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1answer
147 views

Can someone please help me identify my rock?

Hey guys! My name is Brent and I found this rock over 20 years ago while swimming with my siblings in Lake Huron near Kincardine, Ontario. I actually found it under water at one of our favourite ...
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1answer
44 views

I found this rock on my property years ago and was curious what it was [closed]

What kind of rock is this? I found it on my property a long time ago and I can pinpoint exactly what. I was thinking red jasper maybe?
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1answer
66 views

Identification of limestone type

These are images of a stone found and used extensively in the Jammu & Kashmir region between India and Pakistan. These are called devir or devri in the local parlance. Following is the ...
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1answer
67 views

What do the little flags on these martian wind speed data points mean?

According to this answer the weather at the InSight lander on Mars can now be seen online at https://mars.nasa.gov/insight/weather/ This includes the wind speed and I believe the direction (if that's ...
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1answer
41 views

can you help identify my crystal [closed]

it is green is color With silky luster Hardness is about 7 Found in lake Elsinore mountain s
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1answer
140 views

Found this rock in Cambridge, UK, on a recently ploughed field

I found this rock while out walking it’s of a metallic Luster and black in colour, smooth to the feel but bumpy in places, with one small rough patch shown on the picture and no colour change anywhere....
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1answer
91 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
76 views

Metallic Balls Found in Sandstone or Mudstone Layer

Found metallic balls of some type of metal ore surrounded by yellow mudstone the metallic balls crush easily into a fine gray powder. The gray balls are situated between sandstone layers in a soft ...
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58 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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1answer
91 views

I found this near Charmouth, UK. Seems to be metallic

It's somewhere between 5.5 and 7 on the hardness scale Feels very heavy Cold to the touch Doesn't clean up with water, vinegar or alcohol Small bumps on the surface all over
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0answers
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Identify rock found on beach in Florida [closed]

This rock was found in Florida on the beach on top of the sand. There were no others found. Color of rock is white, the outer rim is clear (see through) the inner layer is solid. The inner layer is ...
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1answer
121 views

Could this rock be Basalt?

This rock is 2 3/8", weighs 71 grams has a density of 2.958,I tested the density a few times and its always 2.958, has a hardness of 6-7 almost clear streak test, I tested the streak again and I would ...
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1answer
49 views

Identify rock, found in Florida

Round with crystal looking around it, hard. Seems to have layers in the center. The inside is smooth and the outside layer is textured. The white layers go all the way through the rock. Found on the ...
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0answers
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What kind of efflorecence is this?

It occures in a tunnel under tens of meters of vulcanic deposits (mostly Thephra i think) at Herculaneum, Italy. Water seems to come from the surface, however the sea is near. It's level is lower ...
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1answer
153 views

What is this green yellow heavy stone?

no known origin,its opaque its 2 1/4" leaves no streak, has a hardness of 6-6 1/2 I drilled it with a diamond plated bit,it is a very tough stone.It weighs 2ozs 56.6 grams.When I drilled it the powder ...
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1answer
122 views

What kind of lava tube feature is Cleopatra's Grave?

Cleopatra's Grave is a natural feature inside (warning: PDF) Catacombs Cave in Lava Beds National Monument near Modoc, California. Source: LookBeforeYouLive My apologies, as this image is somehow in ...
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1answer
63 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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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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0answers
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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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1answer
59 views

Mineral/rock identification [closed]

I found this rock in the Himalayan region in India. It was on the roadside of a hill that we were trekking. It has a silver lustre. It has a hardness of 5.5(I can scratch it with a knife blade).it has ...
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1answer
138 views

Help me identify my rock [closed]

I need help identifying what kind of rocks these are. The first one I think is amethyst but not sue. The other one I'm pretty sure is a geode but I don't know what kind.
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186 views

Please Help Identify My Rock

This rock is smooth, heavy and dark grey/black in color with white blotches which are different in shape and size and are also porous. It scratches by a knife and I found it in with many pails of ...
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0answers
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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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1answer
49 views

What type of crystal is this? [closed]

I feel like it's clear quartz that had been ripped from a cluster. However, I haven't seen this before, so I'm not sure. Can anyone confirm or correct me?
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1answer
78 views

Can someone identify this mineral? [closed]

I found this in a stream in Medicine Bow-Routt National Forest, Wyoming. One side (2/3 length) has a pointy pyramid with four faces; other side (1/3 length) has four faces but with with an edge ...
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0answers
45 views

What kind of rock/crystals are these? [closed]

I'm trying to figure out what this rock is. I've looked all over for a similar crystal formation and I'm coming up with a conclusion it's a type of geode but can't find any with a lot of cavities ...
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1answer
122 views

What type of rock is this? Found near Abiquiu, New Mexico near the top of a canyon

I found this rock while hiking down into a canyon near Abiquiu, New Mexico. There were a few others like it nearby. It is creamy white on the outside, and a translucent, bluish gray color on the ...
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1answer
347 views

What is this yellow stone

I found this yellow stone in a creek.It was easy to break by slamming it against another stone and has evenly spaced crystal clear grains.They are very clear that under the sun I thought that water ...
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1answer
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Help identifying rock please

I have this rock that was given to me as a gift a few years ago but I have no information on it. I would like to find out what kind if rock it is. Can anybody help me figure that out please??
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2answers
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What is this spaceship-shaped cloud?

This tweet from the European Space Agency (ESA)'s Spanish account show a striking photo of a round, flat, "space-ship-shaped" cloud in an otherwise completely clear sky. The stars are out so I assume ...
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1answer
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What caused those colorations in bedrock?

I took those photos in a hurry (sorry, the color is a bit off due to low light, the first picture is the most distorted one). It struck me that the discolorations seem to follow the fissures in the ...
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1answer
310 views

Rock ID: Black, Reflective, Light for its Size; Found in Southern Massachusetts

This is my first time posting in a forum of any sort, so I apologize if this question should have been directed to a specific topic area. I found this beautiful rock while I was on a beach near my ...
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1answer
46 views

What is this stone or mineral it's light but strong

The other side is just cyan color I don't know where this stone is from Any help is appreciated
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155 views

Is this a gold ore? I found it in a California creek next to a mountainside

I found this rock while hiking in a creek. It has some bits of white quartz, sheen and some brownish coloring. Does anyone know what it could be? Is there any possibility that it might be gold ore? ...
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Can anyone identify the rock this amethyst crystal was found in? [closed]

I recently acquired a new amethyst crystal and I was wondering what the rock it’s in could be. If anyone has any information it would be greatly appreciated! :) thank you!
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1answer
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What is this translucent and blue vein crystal, 7.5 < Mohs < 9, Lustre: Aventurescence

It looks like quartz, but it has blue veins on the surface that look died. Not all surface scratches are blue though. Hardness: > 6.5. Nail file will not scratch it. > 7 quartz will not scratch it. >...
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1answer
113 views

Identification request: Is this a meteorite with a shock vein? NW Montana

This rock was found in an area covered with approximately 200' of glacial till. The vein in the rock is partially oxidized. The rock is heavy; it shows some barely visible sparkle on its surface; the ...
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0answers
120 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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1answer
54 views

What is this translucent blue-green oblong crystal?

I think it might be aventurine of some sort, but I'm not sure. Hardness: It is harder than a steel nail file. The file leaves a track, but it rubs off, leaving no mark. I scraped it on the bottom ...
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1answer
61 views

What type of rock is this? Help [closed]

Please help me identify this rock. I’ve found it in a cave.
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0answers
51 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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1answer
48 views

What minerals are in this rock? [closed]

Can anyone venture a guess as to what minerals are in this rock? I’ve had it for years and have never been able to identify it. I believe I got it somewhere in Northern California but it was from a ...
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0answers
268 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=...