Science & Technology Museum, University of Patras campus, Greece
My name is "Quartz". I am composed of the elements silicon and oxygen.
I am one of the most common minerals, the second most abundant in the Earth's crust and only a few other minerals are harder than I am. I appear in many rocks because I form in all geological environments. My name is due to the similarity of the color of milky quartz with hail. I exist in several varieties, which take their name from my color, or form.
Powered by iCagenda
Mon | Tue | Wed | Thu | Fri | Sat | Sun |
---|---|---|---|---|---|---|
18
|
19
|
20
|
21
|
22
| ||
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|