Basalt - It has more than 1 mineral, it is very hard and it also looks very hardwearing.
Mudstone - It has 1 mineral, it is quite smooth, it feels very dusty and muddy, if you rub the rock moderately it will start to crumble. Also it is not very rough or hardwearing.
Test 2 – colour
Marble -White, grey.
Slate - Black - with white lines.
Limestone - Yellow, white, brown, grey.
Granite - White, grey, black, green.
Sandstone - Red with little whites particles.
Basalt - Black with bits of white particles dotted around.
Mudstone - Dull grey
Test 4 - Scratch hardness, Test 5 - Acid test
Key for test 4
Key for test 5
ACID TEST >> A fizz means that the rock contains the mineral calcite, or another calcium-based mineral! If it does not fizz it means that there is no calcite or calcium-based mineral!
Comparing the densities of rock samples
From my results, compared with the actual results, it appears some of them are roughly the same, but not all of them, I think this could have resulted in the table I was working on being slightly uneven, changing the results fractionally also if had repeated the test I would have got more accurate answers. So to get the actual density I would repeat the test 2 or 3 times and check the area I am working on, to make sure it’s even.
Rock information
Granite is very strong and durable stone. It takes good polish, It is composed chiefly of quartz and feldspzr mixed with paricles of mica. The colour depends upon the predominating c onstituent of feldspar. GRANITE is popularly used as architectural stone for intereior and exterior walls, floors and monumnetal stone etc. Granite is found in Rock form and dressed in various mentioned forms:-
Granite rocks are igneous rocks which were formed by slowly cooling pockets of magma that were trapped beneath the earth's surface. Granite is used for long lasting monuments and for trim and decoration on buildings.
Sandstone rocks are sedimentary rocks made from small grains of the minerals quartz and feldspar. They often form in layers as seen in this picture. They are often used as building stones.
Limestone rocks are sedimentary rocks that are made from the mineral calcite which came from the beds of evaporated seas and lakes and from sea animal shells. This rock is used in concrete and is an excellent building stone for humid regions.
