Decomposed granite is the completely natural derivative of granite.
Is decomposed granite radioactive.
The amount of radiation emitted from granite can vary depending on the natural uranium and or thorium concentration.
Further weathering produces rock that easily crumbles into mixtures of gravel sized particles sand and silt sized particles with some clay eventually the gravel may break down to produce a mixture of silica sand silt particles and clay.
Granite contains radioactive materials.
These trace concentrations may vary from stone to stone or even within a single slab of granite.
Granite like any other stone may contain veins of naturally occurring radioactive elements like uranium thorium and their radioactive decay products.
However it is undeniable that granite does contain radioactive materials some more so than others do.
Granite is the most abundant type of natural stone in the world.
It forms as a result of magma cooling over millions of years under intense pressure and heat.
The radioactivity of granite as a matter of fact has led to much confusion on the part of week end prospectors.
Prowling the hills with a geiger counter an amateur prospector is apt to be elated when he gets a high count form a body of granite or decomposed granite.
So do other items in our households.
This decomposed granite crumbles into various sizes of particles and can be further crushed and screened to specific sizes for different project needs.
When granite erodes and endures weathering over time it easily starts flaking and crumbling away from its parent source.