Mineral of the Month 2021

July 2021 – quartz

Mineral of the Month 2021

Quartz comes in many different shapes and colors. One well-known twin is the so-called Japanese twin. This naturally fits in with the Olympic Games in Tokyo.

Quartz [SiO2]: Is a very common mineral in the earth’s crust. In granite, it can be easily recognized in the rock alongside feldspar and mica.

learn more

June 2021 – Alum crystal on dinosaur

Mineral of the Month 2021

The mineral of the month was created at home. An alum crystal growth on a small dinosaur. Nina Holler did this experiment and the result looks very nice!

Alum [KAl(SO4)2 – 12 H2O]: Alum crystals can grow from a supersaturated solution, as the solubility of aluminum potassium sulfate increases with the increase in temperature.

learn more