Skip to content

April 23, 2017 Weekly Geology Guest, Ruby

April 22, 2017
Greetings from the Bluff Park Back Porch, way up yonder on Shades Mountain (1,109′) in Alabama:
We will start the Segment 1 with Gems.  For this week we will crawl out from underneath mountains to look at red corundum, rubies.
Corundum, Ruby, Star.  Rosser-Reeves. 138.72c. Sri Lanka. Smithsonian

 

NOVA, Treasures of the Earth

http://www.pbs.org/video/2365886855/

3.    NOVA, Treasures of the Earth, Power (Fossil Fuels).

http://www.pbs.org/video/2365892300/

_________________________________________________________________________

 

Corundum
Corundum is a crystalline form of aluminium oxide (Al
2
O
3
) typically containing traces of iron, titanium, vanadium and chromium.[2][3] It is a rock-forming mineral. It is a naturally transparent material, but can have different colors when impurities are present. Transparent specimens are used as gems, called “ruby” if red and “padparadscha” if pink-orange. All other colors are called “sapphire“, e.g., “green sapphire” for a green specimen.  Because of corundum’s hardness (pure corundum is defined to have 9.0 on the Mohs scale), it can scratch almost every other mineral.

 

________________________________________________________________________________
Ruby
A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond.
>    Search:  NOVA, Treasures of the Earth, corundum, ruby.
References include:

 

–    Wikipedia
–    PBS, NOVA > Treasures of the Earth.
____________________________________________________________________

 

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.  http://tineye.com/
_________________________________________________________________
Next week I will have a look at those green emeralds.
 
Enjoy the adventure!
 
Thanks,
R
1. Corundum. Ruby. Winza Tanzania. by StrangerThanKindness

1. Corundum. Ruby. Winza Tanzania. by StrangerThanKindness

2. Corundum, Ruby Crystal on White MarbleMatrix. Jagdalak Ruby Mine, Sorobi District, Konar Province, Afghanistan. cr. John Betts-Fine Minerals

2. Corundum, Ruby Crystal on White MarbleMatrix. Jagdalak Ruby Mine, Sorobi District, Konar Province, Afghanistan. cr. John Betts-Fine Minerals

3 Corundum, Ruby Crystal, 2cm. Adrian Pingstone picture

3 Corundum, Ruby Crystal, 2cm. Adrian Pingstone picture

4. Corundum, Ruby Crystal., 18,696 c. ruby.125west.com

4. Corundum, Ruby Crystal., 18,696 c. ruby.125west.com

5. Corundum, Uncut Ruby Crystals. by unknown

5. Corundum, Uncut Ruby Crystals. by unknown

6. Corundum, Ruby, Star. Rosser-Reeves. 138.72c. Sri Lanka. Smithsonian

6. Corundum, Ruby, Star. Rosser-Reeves. 138.72c. Sri Lanka. Smithsonian

7. Corundum. 138.7 carat Rosser-Reeves Star Ruby. Sri Lanka NMH. by thisisbossi

7. Corundum. 138.7 carat Rosser-Reeves Star Ruby. Sri Lanka NMH. by thisisbossi

8. Corundum, Ruby Ring, Carmen Lucia, 23.1c. Smithsonian, Chip Clarke Photo

8. Corundum, Ruby Ring, Carmen Lucia, 23.1c. Smithsonian, Chip Clarke Photo

9. Corundum, Rubies-cut, Afghanistan

9. Corundum, Rubies-cut, Afghanistan. by unknown

10. Corundum, Cut_Pink Ruby. 1.41 C. 2005. by Bkell

10. Corundum, Cut_Pink Ruby. 1.41 C. 2005. by Bkell

No comments yet

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: