New Hampshire

 

Geological State Symbols Across America  Geology of the National Parks Through Pictures

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New Hampshire State Geological Symbols
Type
Symbol
Year Est.
State Rock
Granite
1985
State Mineral
Beryl
1985
State Gem
Smoky Quartz
1985

 

State Rock: Granite

 

 

State Mineral: Beryl

 


State Gem: Smoky Quartz

Smoky Quartz is the grey variety of quartz, which is one of the most common minerals on Earth, primarily due to its simple structure and chemical formula, SiO2. Quartz also has an extremely high hardness, 7 on Mohs hardness scale, meaning that it doesn't scratch very easily and therefore does not break down easily. As the rocks on Earth are slowly eroded over time, most of the other minerals will break down into clay while quartz grains will generally just gets smaller and smaller. The result is that most beach sand is composed of quartz that has a slight hematite (rust) stain to it to give the sand grains their slight yellowish color. Although quartz is a simple mineral, it can come in a variety of colors depending on what type of impurities are present in the crystal structure; pure quartz crystal is clear, milky quartz is white, smoky quartz is grey, amethyst is purple quartz, citrine is yellow quartz, rose quartz is pink, as well as some other colors and varieties. Quartz does not have any cleavage, meaning that when it breaks it doesn't form along perfect surfaces. Instead as the quartz crystals grow, individual mineral molecules of quartz are added to the outside of the crystal from water rich in dissolved SiO2 or mineral melt (liquid rock like lava or magma).

 

Related: Alabama State Gemstone - Star Blue Quartz; Arkansas State Mineral - Quartz Crystal; Georgia State Gemstone - Quartz; South Carolina State Gem Stone - Amethyst; South Dakota State Mineral Stone - Rose Quartz


 

References

https://statesymbolsusa.org/states/united-states/new-hampshire


Geology of New Hampshire's National Parks

Through Pictures

(at least the one's I have been to)

Saint-Gaudens National Historic Site

 


Saint-Gaudens National Historic Site

Visited in 2006