Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [identification-request]

For help in identifying objects such as rocks, minerals, clouds, ... Please follow this guide when asking for rock identification: http://meta.earthscience.stackexchange.com/a/125/56.

0
votes
0answers
13 views

Can someone tell me what this stone is?

My father found it in the Himalayas 20 years ago. It was unique looking stone in a rock-fall. It is 6-7cm in diameter, well rounded. It has dark almost black outer stone-like layer and metal center. ...
0
votes
1answer
19 views

can you help identify my crystal

it is green is color With silky luster Hardness is about 7 Found in lake Elsinore mountain s
0
votes
1answer
35 views

Found this rock in Cambridge, uk . on a field recently been ploughed

I found this rock while out walking it’s of a matallic 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 ...
0
votes
0answers
52 views

I have found this while walking dog can you please help identify it [on hold]

i found this while walking dog it’s very heavy for its size and itsa about 35mm by 25mm by 20mm
0
votes
0answers
20 views

What type of a rock is this? [on hold]

Can you identify this please???.
0
votes
0answers
15 views

Help identifying rock [on hold]

I found this rock near a creek bed on the Cumberland plateau about 30 miles north of chattanooga. There area is coal bearing. It has odd knobs and a cavity that goes through it. Seems moderately ...
0
votes
0answers
25 views

Can you identify my rock [on hold]

Found this crystal it's a redish brown
0
votes
0answers
25 views

Please help me identify this stone? [on hold]

Please help me identify this stone
0
votes
0answers
37 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 ...
2
votes
1answer
59 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 ...
0
votes
0answers
15 views

Please can anyone recommend a good website (or book) for identifying rocks from New Zealand?

We're finding lots of sea-smoothed rocks at the beaches, and my kids are keen to find out what rocks they are. I'm keen on a site that has good photos and easy explanations for what they are. Much ...
0
votes
0answers
24 views

Identify Petrified Wood [closed]

Many years ago I was given, what I was told is, petrified wood. However, I really have my doubts. Is there a way to tell if it is since I have been storing it for all this time. Thank you
1
vote
0answers
27 views
3
votes
0answers
37 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. ...
3
votes
1answer
79 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
1
vote
0answers
33 views

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 ...
2
votes
1answer
59 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 ...
0
votes
1answer
32 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 ...
1
vote
0answers
28 views

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 ...
0
votes
1answer
130 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 ...
3
votes
1answer
93 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 ...
0
votes
1answer
50 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.
1
vote
0answers
88 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 ...
2
votes
0answers
39 views

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 ...
1
vote
1answer
42 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 ...
0
votes
1answer
25 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.
0
votes
1answer
48 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 ...
1
vote
0answers
33 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 ...
0
votes
1answer
45 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?
4
votes
1answer
70 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 ...
-1
votes
0answers
70 views

Need to Identfy this Large Rock with Gold Metal in Center of Each Crystal

I haven't been able to identify this large rock. Each crystal prism has what appears to be spot of gold or gold like color inside. What is it? Any help is appreciated.
1
vote
0answers
36 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 ...
2
votes
1answer
80 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 ...
3
votes
1answer
167 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 ...
1
vote
1answer
52 views

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??
6
votes
2answers
900 views

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 ...
5
votes
1answer
80 views

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 ...
4
votes
2answers
218 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 ...
0
votes
1answer
37 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
0
votes
1answer
112 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? ...
1
vote
0answers
34 views

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!
2
votes
0answers
50 views

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. >...
0
votes
1answer
84 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 ...
2
votes
0answers
82 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, ...
1
vote
1answer
47 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 ...
1
vote
1answer
53 views

What type of rock is this? Help [closed]

Please help me identify this rock. I’ve found it in a cave.
2
votes
0answers
41 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 ...
1
vote
1answer
42 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 ...
2
votes
0answers
136 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=...
2
votes
1answer
123 views

What type of rock is this, Nephrite?

Its a very dark green opaque smooth rock, resists stainless knife blade 6.5-7 hardness, its 4x2cm, aprox 40 grams weight. I found this rock among cobble stones in County Roscommon Ireland.Its not ...