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October 22, 2017 Weekly Geology Guest, Diamond

October 22, 2017
Greetings from the Bluff Park Back Porch, way up yonder on Shades Mountain (1,109′) in Alabama:
For the next several weeks we will delve into Industrial Minerals, While they are not glamorous, they are terribly important to our modern way of life. 

Typical examples of industrial rocks and minerals are limestone, clays, sand, gravel, diatomite, kaolin, bentonite, silica, barite, gypsum, and talc. Some examples of applications for industrial minerals are construction, ceramics, paints, electronics, filtration, plastics, glass, detergents and paper.



No, we are not talking about pretty diamond gemstones, but industrial diamonds.
Diamond ( /ˈdəmənd/ or /ˈdmənd/) is a metastable allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice.
Diamond has the highest hardness and thermal conductivity of any bulk material. Those properties determine the major industrial application of diamond in cutting and polishing tools and the scientific applications in diamond knives and diamond anvil cells.
A diamond anvil cell (DAC) is a high-pressure device used in scientific experiments.up to 7.7 million atmospheres.

Schematic diagram of a diamond bearing volcanic pipe

Schematic cross section of an underground region 3 km deep and 2 km wide. A red dike stretches across the bottom, and a pipe containing some xenoliths runs from the dike to the surface, varying from red at the bottom to orange-yellow at the top. The pipe's root, at its bottom, is about 1 km long, and its diatreme, above the root, is about 1.5 km long. The pipe's top is a crater, rimmed by a tuff ring and containing washed-back ejecta. The erosion level is almost zero for Orapa, about 1 km for Jagersfontein, and about 1.4 km for Kimberley.

Industrial-grade diamonds

Images and uses of industrial diamonds;_ylt=A0LEVu7waOpZ5REAnScPxQt.;_ylu=X3oDMTBsa3ZzMnBvBHNlYwNzYwRjb2xvA2JmMQR2dGlkAw–?_adv_prop=image&fr=yhs-lvs-awc&va=Industrial+Diamonds&hspart=lvs&hsimp=yhs-awc

As the hardest known naturally occurring material, diamond can be used to polish, cut, or wear away any material, including other diamonds. Common industrial applications of this property include diamond-tipped drill bits and saws, and the use of diamond powder as an abrasive. Less expensive industrial-grade diamonds, known as bort, with more flaws and poorer color than gems, are used for such purposes.

A scalpel with synthetic diamond blade

A diamond scalpel consisting of a yellow diamond blade attached to a pen-shaped holder

Close-up photograph of an angle grinder blade with tiny diamonds shown embedded in the metal

A polished metal blade embedded with small diamonds
2009. by Hustvedt

A diamond knife blade used for cutting ultrathin sections (typically 70 to 350 nm) for transmission electron microscopy.

2013.  Richard Wheeler (Zephyris)

I wonder if I busted this diamond up and ground it real fine, would it sharpen my knives?

The most famous colored diamond, the Hope Diamond

Picture of a diamond.
by unknown.
Synthetic diamonds are diamonds manufactured in a laboratory, as opposed to diamonds mined from the Earth.

Synthetic diamonds of various colors grown by the high-pressure high-temperature technique
Six crystals of cubo-octahedral shapes, each about 2 millimeters in diameter. Two are pale blue, one is pale yellow, one is green-blue, one is dark blue and one green-yellow.



List of Industrial Minerals

Editors Note:  It is the intent of this site to keep this discussion as simple as possible, so as to educate the interested general public and not to discuss with the geology crowd the latest geologic theories and nuances.  Thanks, R
“No copyright infringement intended.
The rights belong to their respective owners”
Copyright Disclaimer: Under Section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.
Author’s Request:  If you see any pictures that you know the source and photographer, let me know immediately.  Thanks!  R

Images have been searched by TinEye Reverse Image Search.

We will now continue down the Industrial Mineral dusty trail and continue with Dimension Stone.
Enjoy the adventure!

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