Geodes

Geodes
Geode

A geode is a beautiful mineral formation that usually consists of an exterior shell of chalcedony (very fine-grained quartz), with other minerals and / or crystals lining the interior.

The name "geode" is derived from the Greek word "geo" that refers to the shape of the earth, since most geodes are spherical.

A geode can form in any cavity within rock. Typically, bubbles of gas form in cooling ash beds. When such a gas bubble gets “frozen” in a particular location when the silica-rich ash/dust hardens the process of geode-formation begins. The partial or complete filling of the bubble with the minerals that may lead to the crystaline structures that make geodes so attractive may occur soon afterwards - or millions of years later - and can include a wide range of different minerals.

Geodes are sometimes known as "thunder eggs".

See also the main IvyRose Holistic section about Crystals & Gemstones.

Further information about crystals includes an overview of some of the forms of crystals and gemstones, 'families' of crystals and the gemstones associated with signs of the zodiac.

In the News:

Cranberry Harvest underway in USA - 5 Oct '18

Total retail sales of herbal supplements in the USA exceeded $8 Billion in 2017 - 13 Sep '18

It's a bumper blueberry season - 13 Jul '18

Positive effects of exercise on blood cell populations - 20 Jun '18

Benefits of dementia friendly swimming opportunities - 30 May '18

Essential oils used in ambulances - 28 May '18

Psychological benefits of different types of natural environments - 2 Nov '17

Short simple mindfulness training could help drinkers reduce alcohol intake - 24 Aug '17

From the start of the Renaissance in Europe in the 14th century, artists and sculptors depicted angels in their religious work.

Although care has been taken when compiling this page, the information contained might not be completely up to date. Accuracy cannot be guaranteed. This material is copyright. See terms of use.

IvyRose Holistic 2003-2018.