Gondwana is the southern most part of Pangea. Opal very rarely occurs in nature, and when at it's best quality, it is worth more than diamond. The largest deposits of opal are in Australia, but because of the small machinery required to excavate it, large mining companies do not both with it, leaving any opal found to be brought up by miners who work solitarily in an underground cavern digging with machinery over the course of each day. Opal is also found on Mars, but due to it's distance and di...
Subscribe now for just $9.99 per month and gain access to over 1,250,000 (1.25 million) words worth of educational material pertaining to a wide array of subjects and interests
Some of the topics covered include (but are not limited to)...
Science - physics, elements, chemistry etc.
Mathematics - theories, historical figures, important equations etc.
History - famous figures, battles, empires and civilizations etc.
Art - artists, artwork, art mediums etc.
The ultimate resource for teachers, students, writers; truly anyone with a curious and open mind for new concepts and novel vantage points of observing the world
Not convinced? Keep scrolling. Enjoy the first 500 characters of each and every piece of content available for premium members for FREE! The scroll never ends, so learn all you can!