Unknown, but one theory is appx 240m years. There is much that is still not understood about the mysterious geode.
3
not sure
Its simple, see a lot of people would have guessed a geode is a mineral or a gem. But its not. Geode is a sedimentary rock so instead of looking for the luster steak and hardness look facts on it like from its sedimentary form. A geode might have minerals in it, but that doesn't make it a mineral itself.
A geode with a flint in it is called a "nodule".
Geodes are sphere-shaped stones which are partially hollow, and often lined with sparkling mineral crystals inside their cavities. It usually takes 240 million years to form a geode.
Geode is the scientific name. It is derived from Greek and means "earthlike."
A geode is a chemical sedimentary structure formed by mineral precipitation, similar to the way sedimentary cave structures are formed.
it can take hundreds of years just to form half
a homemade geode could prob take about 7 days
There is no such thing as a pumice geode. Pumice and geodes form under completely different conditions.
Its simple, see a lot of people would have guessed a geode is a mineral or a gem. But its not. Geode is a sedimentary rock so instead of looking for the luster steak and hardness look facts on it like from its sedimentary form. A geode might have minerals in it, but that doesn't make it a mineral itself.
the empress geode of urnguary
A geode with a flint in it is called a "nodule".
a geode
The geode crystal for February is Amethyst
I'm taking this geode with me.
Geode is a rock or stone with crystals.
The found the geode while travelling through the caves. This is a sentence containing the word geode.
a geode bro