What are the properties of rocks ?

Question

And can you give me an explanation for each property please ?

Answer 1

http://www.stonecareuk.net/propertiesofstone.html

Hope this site is of help to you

Answer 2

IGNEOUS ROCKS
INTRUSIVE –interlocking crystalline grains big enough to see
1. Granite: mostly light colored grains, interlocking feldspar, quartz, usually mica. A few dark grains.
2. Diorite: 50:50 mix of light and dark interlocking grains
3. Gabbro: interlocking black or dark green grains

EXTRUSIVE -grains too small to see
4. Rhyolite: light pastel color, often mottled. May be soft. May contain visible crystals.
5. Andesite: intermediate shades between rhyolite and basalt. Often dotted with visible crystals.
6. Basalt: gray or black. May have holes (vesicles). May turn rust red.
SEDIMENTARY ROCKS
CLASTIC - made of sediment that was transported as discrete sediment grains
7. Conglomerate: rounded pebbles glued together by natural chemicals.
8. Sandstone: any rock made of sand. Feels gritty and looks sparkly.
9. Shale: hardened mud, made of silt and clay. Soft, layered, chips easily.

NON-CLASTIC -transported as dissolved chemicals (ions in solution)
10. Limestone: soft, light to dark gray, fizzes with acid, grains visible or too small to see.
11. Chert: very hard, edges sharp, looks like porcelain, may be almost any color.
12. Gypsum: clear or white, very soft (scratch with fingernail).
METAMORPHIC ROCKS
FOLIATED -has wavy layering (but this is microscopic in the case of slate)
13. Slate: very flat, hard, often shiny, splits into thin flat layers.
14. Schist: wavy layering, often has shiny mica with visible flakes.
15. Gneiss: visible grains, looks like granite but is layered or streaky.

NON-FOLIATED -little or no layering
16. Quartzite: looks like sandstone but harder, smoother and more sparkle (sugary texture).
17. Marble: soft, sparkly interlocking grains. Usually white or pastel shades. Fizzes with acid.
18. Metaconglomerate: may contain stretched or flattened pebbles. May be foliated

Answer 3

caves