Thunder egg

Virtual Museum ID: 19-LDM15

Summary
Data
Geological Info
Images

Specimen Summary


A thunder egg is a nodule-like rock similar to a filled geode, that forms within rhyolitic volcanic ash layers. Thunder eggs form in the lava from water percolating through porous rock that is carrying sillica in solution. Colour variances come from the different minerals found in the soil/rock that the water moved through.

Usually composed of quartz, agate, opal, and/or visibly crystalline quartz. It has been proposed that thunder eggs are the interior of cavities,/vesicles/gas bubbles in rhyolitic lava flows.

Specimen Data

 

The information listed below relates to the current holding location or collection that the sample is from, and whether the item is viewable at that location or is part of a private collection. Coordinates are given as guides, and we remind you that collecting specimens from these locations is not allowed. Caution is advised visiting such sites and Below BC assumes no responsibility for any injuries or trespassing charges that may occur as a result of the viewer entering these sites.

Collection Details

Original Collection:

Lakes District Museum (LDM)

Sub Collection:

-

Collection ID:

LDM-15

Virtual Museum ID:

19-LDM15

Accessibility:

Date Added to VM:

2019-08-23

Location Information

Sample Origin:

Merrit, British Columbia

Specific Site:

-

UTM Easting:

5553752.842

UTM Northing:

654333.4619

Datum:

10 (NAD 83)

Coordinate Accuracy:

Approximate

Specimen Details

VM Category:

Rock

Primary Features:

Thunder egg

Primary Mineral Formula:

-

Primary Category:

-

Secondary Features:

Advanced Geological Information

 

The following section provides geological data relating to the specimen or the site it was collected from, when available. Information has been obtained from various sources including private and government datasets but may not be up to date. Any geological time periods or ages listed often relate to the primary geology of the area, and may not be the actual date of an event such as mineral formation.

Geological Formation:

N/A

Geological Period:

N/A

Stratigraphic Age:

N/A

Geological Belt:

N/A

Geological Terrane:

N/A

Minfile ID:

N/A

Minfile Link:

N/A

Site Details:

N/A

Additional Images