During our recent Earth Sciences Weekend, I helped staff a touch table with unusual rocks.
The Acasta Gneiss - piece of the oldest rock in the Earth’s crust found in N.W.T., Canada (approx 4.2 billlion years old)
Springwater Pallasite - portion of the mantle of an asteroid – equivalent to what our planet looks like 3,000km down
Chondrite Meteorite - rock formed at the beginning of the Solar System, before planets had formed, approx 4.5 billion years ago – not the actual one we were showing but filled with small spheres (chondules*) like this one has.
* A peculiar rounded granule of some mineral, usually enstatite or chrysolite, found imbedded more or less abundantly in the mass of many meteoric stones, which are hence called chondrites.- Webster’s Unabridged Dictionary
In addition, we had a 2 billion year old sedimentary rock showing fossilized waves – like those shown in this photo.
And to attract visitors to the table, an amethyst geode….for the bling factor.
- amethyst geode photo source : bigquartz.com























