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Quartz - Wikipedia

en.wikipedia.org/wiki/Quartz

Quartz is the second most abundant mineral in Earth's continental crust, after feldspar. ..... He discovered that regardless of a quartz crystal's size or shape, its long ... Warren Marrison...

Who discovered quartz? | Reference.com

www.reference.com/science/discovered-quartz-dae6186efc6a4bdc

Later that century, the present spelling was first used. It was also referred to as crystallum, silicum, silex and silice. Quartz is a natural form of silicon dioxide, and  ...

quartz - Encyclopedia.com

www.encyclopedia.com/topic/quartz.aspx

First-Hand:The First Quartz Wrist Watch - Engineering and ...

ethw.org/First-Hand:The_First_Quartz_Wrist_Watch

Mar 28, 2016 ... In July 1967, somewhat more than 40 years ago, the world's first quartz wrist watch had been created by a group of researchers at the Centre ...

Mathematicians are geeking out about a bizarre discovery ... - Quartz

qz.com/639452/mathematicians-are-geeking-out-about-a-bizarre-discovery-in-prime-numbers/

Mar 15, 2016 ... Mathematicians are geeking out about a bizarre discovery in prime numbers ... checked the first billion prime numbers, they found that a prime number ending in ... “Every single person we've told this ends up writing their own ...

Amethyst-The Royal Gemstone - Cochise College P

skywalker.cochise.edu/wellerr/students/amethyst-royal/project.htm

Amethyst is a purple colored quartz first discovered in 3000 BC. ... under pillows to cure insomnia, allowing the person to sleep and even bringing good dreams.

IEEE UFFC | History | A History Of The Quartz Crystal Industry In The ...

www.ieee-uffc.org/main/history-bottom.asp

The history of the industry is traced from its origin with the discovery of ... It is generally accepted that Cady was the first to use a quartz piezoid to control the ...

CRYSTAL SKULLS HISTORY - amazing crystal skulls

www.crystalskulls.com/history-crystal-skull.html

1942: Jose Iniquez, age 17, discovers two crystal skulls in a Mayan ruin during a field trip from his class. His teacher lets him keep the small clear quartz skull.

Quartz Mineral | Photos, Uses, Properties, Pictures - Geology.com

geology.com/minerals/quartz.shtml

Quartz flint arrowheads: One of the first uses of quartz, in the form of flint, was the production of sharp objects such as knife blades, scrapers, and projectile points ...

The Quartz Page: Rose Quartz

www.quartzpage.de/rose.html

May 26, 2009 ... pink quartz develops crystals while rose quartz does not. ... This first sounds like an odd suggestion, as dumortierite is often deeply blue (even ...