can you identify this rock?
http://static.flickr.com/94/248151057_aa66cc6292.jpg
it's definitely not graphite as it does not leave a mark on paper.
2006-09-19 23:36:45 · 15 answers · asked by angry_fruit 2 in Science & Mathematics ➔ Earth Sciences & Geology
it's lighter than hematite in both weight and colour. i have a pyrite and it doesn't look at all like it. also it's non-magnetic btw.
NOW: it looks the most like Galena, BUT on wikipedia it says the Mohs scale for galena is about 2.5, and this thing is harder. we figured it's approximately 6.
and no, it's not aluminum foil! :)
2006-09-20 04:47:10 · update #1
looks like iron, it could be a small iron meteorite
2006-09-19 23:39:53 · answer #1 · answered by Anonymous · 0⤊ 0⤋
First of all, Where did you find it? If it is just a piece that you collected along a road, it could be silicon metal (man made). If it is naturally occurring (in a vein) then it could be a sulfide and there are several possibilities, stibnite could be one of them. You can do X-ray diffraction and identify it for sure. Go to a local university and they can figure that out using other methods as well.
2006-09-20 09:36:08 · answer #2 · answered by Scientist13905 3 · 0⤊ 0⤋
It looks like galena. It would be hard to tell without feeling the weight.
2006-09-20 00:05:17 · answer #3 · answered by Anonymous · 0⤊ 0⤋
According to my books i really look like hematite. One test you could try is to heat is, if it is hematite it may then become magnetic. Your best bet though to have a positive identity would be to find a local geologist take a look at it.
2006-09-20 18:34:33 · answer #4 · answered by texas_sandie 2 · 0⤊ 0⤋
It reminds me of cassiterite ( tin ore)
# Fracture is conchoidal to uneven.
# Hardness is 6 - 7
# Specific Gravity is 6.6 - 7.0
# Streak is white, but at times brownish.
2006-09-20 04:54:46 · answer #5 · answered by Anonymous · 0⤊ 0⤋
GALENA.
but physical properties has to be checked. like cubic form etc.
2006-09-20 00:32:37 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Perhaps its hematite - looks similar
2006-09-19 23:48:36 · answer #7 · answered by solstice 4 · 0⤊ 0⤋
It could be "fools gold" or pyrite - see the picture below.
2006-09-19 23:51:50 · answer #8 · answered by robcraine 4 · 0⤊ 0⤋
One thing that would help is your location if same area as where you found rock, or location of where you found the rock.
2006-09-19 23:42:48 · answer #9 · answered by wdy_67 3 · 0⤊ 0⤋
I did a image search. The results were this from ask.com images.
2006-09-19 23:43:57 · answer #10 · answered by lovie12346 3 · 0⤊ 0⤋
hun? Rock? Where is the rock?! I can see a hand holding an alluminium foil!!
2006-09-20 00:42:00 · answer #11 · answered by sando 1 · 0⤊ 1⤋