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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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?
10
votes
1answer
829 views

What kind of coal did I find? [closed]

I found a piece of (what I believe is) coal, on Cape Cod last week. Its density is 1.43 grams per milliliter. With this information is it possible to know whether it's Anthracite, Bituminous or ...
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 ...
8
votes
1answer
912 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. ...
8
votes
2answers
652 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 ...
8
votes
1answer
578 views

What kind of rock is this gray and brown weathered cylinder-shaped rock I found near a New York lake? [closed]

I found this rock on the beach of a freshwater lake in the Finger Lakes region of New York state and am interested in knowing more about it. It is about 2" tall and 2" wide at widest point. Weighs 14....
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 ...
7
votes
1answer
288 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 ...
7
votes
1answer
378 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 ...
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/...
7
votes
0answers
167 views

Rock ID: brown, magnetic inclusion in Carpathian amethyst geode [closed]

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 ...
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
789 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: ...
6
votes
1answer
662 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?
6
votes
1answer
548 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, ...
6
votes
1answer
537 views

What kind of stone is this? Green tourmaline, or something else? [closed]

I was looking near mountain rivers for stones that I know like quartz, calcite, jasper. By chance on the top of the ground there was this one. It's a silky lustre semi translucent green-yellowish, ...
6
votes
1answer
445 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, ...
6
votes
1answer
171 views

Identify yellow-tinted translucent mineral [closed]

I found a mineral near the hexagonal rock formations in High Island, Hong Kong that I'd like to get ID'd. It has a greasy and subadamantine lustre. It can scratch a U.S. Quarter Dollar and some types ...
5
votes
1answer
335 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.
5
votes
1answer
165 views

What is the name of these crystals? [closed]

I tried searching for matching crystals online, my guess is Bournonite. What crystals are these? This image was taken by a relative at some sort of museum. The image and the observation that they ...
5
votes
2answers
161 views

Rock Identification: clear, hues of yellow/orange. Washington State [closed]

I purchased this rock at an estate sale along with some rose quartz. The sellers had no information on it. My husband was able to break it today with a hammer, but I have no idea what the material is. ...
5
votes
1answer
373 views

What is this yellow stone [closed]

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 ...
5
votes
1answer
461 views

Icelandic rock I am trying to identify [closed]

This is a rock that I picked up from underneath a melted segment of Glacier in east Iceland. It is not unusually heavy or light for it's size. I can scratch the surface away with a penny. The ...
5
votes
1answer
240 views

Rock ID: hard, smooth, found on hill south of Nashville [closed]

Could use help identifying this rock. It's face has some variation in color which ranges from cream to caramel. (Some variation could be from different exposure to the weather.) The rock face is ...
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 ...
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.
5
votes
1answer
152 views

Identification: mystery rock with golden features and shimmer [closed]

I found this rock in our backyard in Germany. As our garden is filled with bushes it was very oddly placed and I have carried this rock around with me ever since, wondering what sort of rock it might ...
5
votes
1answer
161 views

Hollow tubular ferromagnetic rock? What is this? [closed]

I'm hoping others can help me identify this odd looking hollow rock/mineral/metal thing. I'll give pictures, then a video, then some other helpful info. First, here are some pictures. It's roughly 10 ...
5
votes
1answer
804 views

What type of sparking stone could this be? [closed]

A few years ago, I went to a beach in the south part of Chile, specifically Lake Lanalhue, it was filled with special rocks that when you picked one up and threw it against another that you would see ...
5
votes
3answers
685 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 ...
4
votes
1answer
253 views

Stone identification [closed]

i got this pendant and i want to know if it is natural turquoise or not Please help me thank you
4
votes
1answer
75 views

Unidentified mineral found in France [closed]

(I am not a native english speaker, so I'm not really aware of the specific terminology.) A few years back, I found an unidentified rock on a beach in Normandie (France). It looks and feels (texture-...
4
votes
2answers
824 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 ...
4
votes
1answer
209 views

What type of gem is this? [closed]

I was wondering what type of stone this is. I tested it on Mohs hardness scale. It scratched quartz. I found it at Crystal Cave in Kutztown, Pennsylvania. They were selling bags of gems you could sift ...
4
votes
2answers
1k views

What is this silvery rock? [closed]

I found this silver-colored rock on Mount Shasta. It has these features: non magnetic sharp edges when light hits it shows the colors of the rainbow its not too heavy Can you identify it?
4
votes
1answer
292 views

ROCK ID: Near Big Bend National park, hard on outside, soft inside [closed]

I found this on a hike in Terlingua, Texas, near Big Bend National Park. It can't be scratched on the outside shell, but the white part on the inside is scratch-able with a knife. It is heavy.
4
votes
1answer
425 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 ...
4
votes
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 ...
4
votes
1answer
471 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. ...
4
votes
3answers
599 views

What is this white rock with orange section I found in Ireland? [closed]

Brown gem found in smooth white rock very fine smooth almost shiny with clean breaks and a bluish tinge on breaking. Northern Ireland just south of Bangor on the North Down coast. Cheers!! Andy
4
votes
1answer
715 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 ...
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
0answers
66 views

Identification: Greenish Greek stone [closed]

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,...
4
votes
0answers
104 views

What is this complex looking rock with lavender and yellow crystal areas on a lighter-colored matrix? [closed]

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 ...
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.
3
votes
1answer
89 views

What is this rock I found being sold in a store? [closed]

I was recently on vacation in Hawaii and while there, entered a rock and mineral type store where I saw the rock below. I forgot to ask what it was while I was there and I am unable to go back and do ...
3
votes
2answers
208 views

Help identify glowing stone with scarab carving [closed]

I found almost no information from searching Google, Someone mentioned it might be Fluorite. I simply don't know where else to look for an answer and so I am asking you. When I was a child, my ...
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
648 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 ...