EISCO 12PK Raw Porphyritic Granite, Igneous Rock Specimen - Approx. 1"- Geologist Selected & Hand Processed - Great for Science Classrooms

Product Information

About

PORPHYRITIC GRANITE
Granite forms slowly in shallow or evolved magma chambers, and is also commonly found as magmatic intrusions in the crust. The large crystals are indicative of a slow cooling rate, and make mineral identification simple
GREAT FOR GEOLOGY CLASSROOMS
A must-have sample when discussing rock types, the rock cycle, and the formation, classification, and identification of igneous rocks. This set of twelve samples is excellent for group study and examination
GEOLOGIST SELECTED
Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED
Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED
Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification