Number 5: Syenite
This rock is named after Syene, Egypt where many of the buildings are composed of the material. This rock is particularly hard and would be fatal if you fell on them from a high enough height.
Fun Fact: Did you know that early man used Syenite as their primary source of food? So next time you get hungry on the camping trip try taking a bite out of a prehistoric meal!
Number 4: Pegmatite
Pegmatite is unique in that it has large interlocking crystals of feldspar and quarts making up its matrix. It's because of this that falling onto this type of rock would be less fatal than normal.
Fun Fact: Did you know that Pegmatite is the first rock to have been discovered by astrologists? As one of the few specimens that wasn't discovered by geologists, Pegmatite stands as the only rock to be lucky in love and good fortunes in February.
Number 3: Pumice
One of the more popular rocks on the list, Pumice is made from eruption debris which is the reason for it's soft, porous texture. This rock is ideal for falling onto.
Fun Fact: Did you know that Pumice was first going to be called Gretice? This didn't come to pass though since the residents of Gretice, Turkey (where the stone was discovered) had such an aversion to science. This left the name Pumice who was the wife of the geologist who discovered it.
Number 2: Lapilli Tuff
This "rock" is actually composed of little pellets of volcanic ash. When compressed together this rock would be fatal to fall onto but in it's pebble for would be less fatal unless you were really high.
Fun Fact: Did you know that Lapilli Tuff is the only rock in the world that is lighter than water? The early Bretons used Lapilli Tuff as the main component of their boats! They began to use wood when they realized that rocks were more difficult to nail together than wood.
Number 1: Granite
Granite is formed from an extremely slow cooling time and is made up of feldspar and quartz components that are harder than steel. This rock has the lowest HtM ratio (Height to Mortality). Be careful around it!
Fun Fact: Did you know that was the first rock to be showcased at the annual Geologist Romp N' Stomp in Thagmut, Illinois? It drew the largest conference attendance that still stands today. 23.
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