Quartzite is a non-foliated metamorphic rock that is produced by the metamorphism of sandstone. It is composed primarily of quartz. The specimen above is about two inches (five centimeters) across.
Industrial Hemp Facts. Industrial hemp is a variety of Cannabis sativa and is of the same plant species as marijuana. However, hemp is genetically different and distinguished by its use and chemical makeup. Industrial hemp refers to cannabis varieties that are primarily grown as an agricultural crop.
Hemp is actually one of the most widely utilized and diverse industrial crops in the world. 1  Its fibers are considered the longest and most durable of all natural fibers, and it can even be grown without deadly herbicides and pesticides. Hemp seed oil, or hemp oil, is made by pressing hemp seeds.