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.

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2
votes
1answer
137 views

Rock ID: Opaque Glassy Gem with Unknown Location [closed]

I would like to learn more about this rock that I have come to inherit. It resembles a quartz, and after reading about this mineral I am curious if it is a milky Quartz. Anything you can teach me ...
2
votes
2answers
529 views

What is this vein-bearing rock? [closed]

This rock was found in Indiana, USA. It is large, egg-shaped and measures approximately 75 cm by 15 cm (2.5' by 0.5'). It is non magnetic. What could it be that caused those lines?
2
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1answer
242 views

Unidentified black spherical rock [closed]

I need help in indentifying this rock.. The diameter of the rock is 18cm (Approx) and the weight is 9.876 kgs (21.772853 pounds). It feels much heavier in the hand than an ordinary earth rock.
3
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2answers
150 views

Pinkish quartz like. Help identifying and if it is worth anything? [closed]

I recently purchased a home, in the fireplace surround that I tore down were several rocks (quartz) that I thought were unique. I am looking for identification help and if they were worth anything. ...
3
votes
1answer
139 views

Bluish rock… help in identifying it and is it worth anything? [closed]

I recently purchased a home, in the fireplace surround that I tore down, were several rocks/quartz that I thought were unique. I am looking for identification help and if they were worth anything? ...
4
votes
1answer
711 views

What are these oblong shaped rocks called, with pigment inside? [closed]

There are these rocks we have -- not too common, usually find them in loads of small rocks, very seldom at random. They are perfectly oblong, and sort of smooth, but not quite as smooth as a river ...
6
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1answer
660 views

What are the blue spots in this rock? [closed]

The rock is 4 inches (~10 cm) long. The vendor claims this rock is from K2. Are the blue spots real or painted on?
3
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1answer
95 views

What rock is this that I found on beach? [closed]

Found this on the beach in NY - it is a dark red colored rock with the green stones:
2
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1answer
742 views

Could you please identify this rock for me [closed]

I found this rock several days ago and think it looks like RUBY ! Could you please help me to recognize it ?
5
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1answer
333 views

What are the circular features in this rock? [closed]

I found this rock by the shore of Lake Ontario. It's light weight and it was grouped with some other rocks with the same patterns.
2
votes
1answer
80 views

Rock ID: Grey, 3.5-4.5 g/cm³, slightly rotten-like smell when hit [closed]

I would like to know what type of rock is the big one in the upper part. It has a density between 3.75 and 4.5, a white streak and when it's hit, it smells slightly like rotten eggs, so I guess it ...
2
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1answer
355 views

Please help me identify this very cool rock with a face [closed]

I found this rock where there was a lot of petrified wood but this does not resemble any of the many pieces of petrified wood that I have collected. It has the shape of a face, in my opinion. It has ...
0
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2answers
502 views

Can you please tell me anything about this rock I found? [closed]

I was rock hunting the other day and came across this. It's shiny and very heavy. I have never seen something like this. Please someone help
5
votes
1answer
383 views

I'm trying to find the name of this rock [closed]

I found it upstate New York... Can someone please help me identify this rock. I added photos with different lighting. It's a very dark purple with a mix color showing more in the center. Its very soft ...
7
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1answer
377 views

Mineral Rock Identification [closed]

Went out hiking after some heavy rains and came across an area that looked like broken glass sticking out from mud. On a closer look this is what we found. Not sure what it is and would like to know ...
8
votes
1answer
907 views

Rock ID: brittle black/white w/ crystals & mica-like cleavage layers, Raleigh, NC, USA [closed]

Where it was Found: I found the rock laying on the sidewalk near some landscaping at my apartment complex in Raleigh, NC. Size: The largest intact portion of the rock is about 2.2 cm in diameter. ...
4
votes
1answer
424 views

What rock is this? [closed]

I've had this little guy for a while now and have been trying to identify it for some time with no luck. It looks like its oxidized with tiny little crystals, but it's hard to tell for sure. Any ...
1
vote
2answers
243 views

What kind of mineral/rock have I found in the woods? [closed]

Found this chunk of crystal in the forest right by a stream today, embedded into a soft rock (clay?) Was hoping someone could help with this, I was told its quartzite but I'm unsure.
4
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2answers
191 views

Help me to identify this rock, please, [closed]

Can anyone tell me what this rock is? It was found on the rocky beach at 'Glen Boreraig' on the Isle of Skye, Scottland. Definitely water-worn. It is 9.5 cm x 4.5 cm with inner darker part 4.5 cm x ...
3
votes
1answer
216 views

Anybody know what this may be? Is it some type of meteorite? [closed]

This rock is heavy and a magnet sticks to it. I don't know where it's from but I got it from somebody who bought a rock collection from an auction of a collector in MN. I grinded a spot on it and it ...
7
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1answer
287 views

Ceramic “honeycomb” structure with triangular cells: is it natural? [closed]

I saw this yesterday at a friend's house. He says he found it in a creek bed in southern Oregon. It looks like it is made of the common clay mud around here. The shafts are around a millimeter across ...
1
vote
1answer
168 views

What is this heavy little rock? [closed]

I found this rock along the shoreline of Lake Ontario in the town of Ajax. It stood out from the smooth pebbles surrounding it and at fist glance I thought it was a piece of concrete. When I picked it ...
1
vote
0answers
145 views

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

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 ...
4
votes
1answer
167 views

Is this a rock? [closed]

My son found this in our front yard. We live in Richardson, TX. It is brittle and little gold flecks fall from it when you handle it. The darker smooth parts are like a mirror. The clear part at the ...
4
votes
1answer
147 views

Can anyone identify this stone? [closed]

I found this rock at the weekend in the forest of Haigh Hall, Standish. It seems to be a solid mass of fibrous material. I have given it a scrub with warm water and a toothbrush just to get rid of ...
4
votes
1answer
467 views

Rock ID: a glassy, black, translucent mineral [closed]

Hardness : it barely scratches glass, can't scratch gorilla glass of my lg g2 Transparency : translucent, you can see the flashlight of a smart phone. Luster : it has glassy luster. Shiny surfaces. ...
0
votes
1answer
159 views

Rock ID: Bone and potato-shaped, copper-colored [closed]

I found these two intriguing rocks on the UK's seaside. They have an unusual potato shape and copper/green color. Whrn knocked against each other, the sound is clear, metallic and the vibrations keep ...
7
votes
3answers
2k views

How was this egg shaped rock made and what is it? [closed]

The following small egg-like rock was found laying on the ground in Tampere, a city in southern Finland. It weights about 950 grams, has a volume of about 360 cm3 and thus a density of about 2600 kg/...
1
vote
0answers
132 views

Can you help me identify this rock? [closed]

We found this in our back yard (in Michigan) while digging one day. I'm curious about it, it seems different than others we've found. It's a pretty good size, about the size of a basketball.
3
votes
1answer
101 views

Mineral ID: a black, lusterous, light stone [closed]

There is a stone found on a farm in my village. My village is in north eastern anatolia that is a mountainous area. The stone is said to be lighter than average and semi-transparent. Photos are not ...
3
votes
2answers
142 views

Rock ID: beige, porous, multiple cavities, found in mountain stream, Southern Alberta, Canada [closed]

The rock is beige, porous and has cavities. It was found in a mountain stream in Southern Alberta, Canada.
0
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1answer
120 views

Can someone please help me to identify this mineral? [closed]

Can someone identify this mineral for me?
2
votes
1answer
125 views

Rock/ possible fossil question [closed]

I found this rock in Lake Michigan. I thought it was a coral fossil, but now I think it might be a metamorphic rock that developed some kind of crystal structure inside. However, I have no idea:) ...
2
votes
0answers
628 views

What type of rock is this powdery white rock with a fairly smooth dark shell and rusty patches I found while digging up pipe? [closed]

This rock is sort of a dark grey/black and kind of shiny but more matte I'd say. It does have some brown rust-like spots on it. And the inside has little dimples in a what seems to be more chalky ...
3
votes
1answer
90 views

What rock is underneath malachite [closed]

I recently bought a large piece of malachite, for the purpose of trying to extract the copper. The piece looks like this. I would like to identify the rock, because I would ideally dissolve it in ...
2
votes
1answer
80 views

Unknown semi-precious stone [closed]

On the handwork market I've found piece like this Merchant (who was reseller) didn't know its name. Have you any idea what is that? EDIT: I think it was about 5 on Moch's scale. It was black with ...
7
votes
2answers
2k views

Rock ID: Geode, soft, dull black exterior with crystal inside, from Snæfellsnes, Iceland [closed]

My fiancée found this on a recent trip to Iceland, on Snæfellsnes peninsula - she spotted the sparkle of the crystals among the abundant black, grey, and dark red rocks. There is a roadside vista spot ...
4
votes
2answers
823 views

Can you confirm if this rock is sandstone - it is this from Cape Cod, MA, USA [closed]

A few years ago I found this unusual looking rock while walking around the beach of Cape Code, MA, USA. My guess is that it is sandstone, but I didn't see any others like it on my stay. It is has ...
8
votes
2answers
650 views

What kind of a rock is this (from Finland)? [closed]

I found this rock at my friend's summer cottage in Finland. I have never seen a rock like this in my life. It resembles a lava stone, but Finland isn't a volcanic country. I am no expert in geology ...
3
votes
2answers
379 views

Growth identification on obsidian needed [closed]

What are the small white growths on my obsidian? And does this specimen look odd or rare?
2
votes
2answers
107 views

Describing this rock [closed]

Is this rock granite? Can anyone help me identifying this rock and describing it?
6
votes
1answer
788 views

Rock identification: meteorite or lava? [closed]

I was told by a crystal quartz store owner it was a type of lava rock but I have high doubts. hardness: diamond size: 4'' $\times$ 4'' weight: 1.5 lb location: unknown smell: sulfur trait: ...
3
votes
2answers
646 views

Rock identification: opal or crystal? [closed]

I picked this up from a good friend, he didn't have any information but someone said it was an opal and not a crystal. It is see-through like foggy glass in some spots. hardness rated as quarts size ...
5
votes
3answers
683 views

Rock or possible fossil identification needed [closed]

Found in Cressy River, Stanislaus County, California in April 2014. The rock is 3" $\times$ 1" weight is 7 oz and from 1-10 on hardness i give it a 8 . I found it in the river. It caught my eye ...
6
votes
2answers
209 views

Rock identification and features [closed]

The rock is approximately 12cm in length and from what I can tell this is a sedimentary rock and is a conglomerate. I'd say it was from a high energy environment due to the round gravels. This is all ...
6
votes
1answer
444 views

Is this iron ore? [closed]

Is this iron ore? I found it in the back yard in Western Australia few years back; it has a roughish surface. It was sticking out of my grass. It has sand grains stuck on it. It is reasonably hard, ...
8
votes
2answers
2k views

What is this blue rock? [closed]

I am trying to identify a rock my husband found.The rock was found in Columbus Ohio about 20 feet (6 m) down. It is about the size of a basketball and extremely heavy (90 lbs) and difficult to cut ...
5
votes
1answer
163 views

Identification - is this granite? [closed]

What type of rock is this? It's sold as poultry grit and says granite on the bag, but I want to be sure. Canadian Quarter (Ø = 23.88 mm) shown for scale.
11
votes
4answers
3k views

What sort of rock is the large polished boulder? [closed]

This large polished boulder sits outside one entrance the University College Hospital in London: Here is a close up: What sort of rock is it and how would it have formed?
6
votes
1answer
546 views

What kind of rock is this (from UK)? [closed]

What kind of rock is this? It was found in Threemilestone, near Truro in Cornwall, UK. The rock has a hardness of over 5.5, as a knife doesn't scratch most parts of it. It is 10cm across the top, ...