Who made the quartz clock and who made the water clock?i need a refference and website with your answer and a label which is which.
Granite - which is a silicate rock Quartz is a mineral, not a rock
Silicate rock. There are many different types of silicate rock, so sandstone, quartz and granite are sort of correct. Though it is believed that different types of feldspars make up, up to 60% of the Earth's crust (it is technically a tectosilicate). Out of the minerals listed, Quartz is the most abundant, and the second most overall. Another common mineral is basalt. Hope this helped. Have a great 2011.
