Obsidian Photos           

Cochise College
Photos of Rocks
Igneous Rocks
Geology Home Page
Roger Weller, geology instructor                       

wellerr@cochise.edu

 

Obsidian 
last edited:  11/14/16    number of photos:  48                            
Obsidian is volcanic glass.

 

photos
obsidian, Apache tears: A  B  C  D  E  F 

obsidian, Apache tears in perlite:  A  B
obsidian, black:  A  B  C  D  E
obsidian, mahogany:  1  2  3  4  5  6
obsidian, dark gray:  1  2
obsidian, flow banded:  1  2  3  4

obsidian, porphyritic: A

obsidian, snowflake:  A  B  C  D
obsidian, spherulitic:  1  2  3  4
obsidian, tektite look-a-likes:  1  2  3  4  5  6  7  8
obsidian, variegated:  1  2
obsidian, weathered:  1

obsidian, talus slope
obsidian arrowhead                                                              
obsidian-polished egg

 

Photos are copyright free for non-commercial educational uses. 
Just credit photos to R.Weller/Cochise College.
copyright 2016-R.Weller

Source locations for obsidian used by native Americans:
Northern Arizona:
     San Francisco volcanic field: Government Mountain,
     Sitgreaves Mountain, RS Hill, Kendrick Peak, Slate Mountain,
     O'Leary Peak-Robinson Crater
     Mount Floyd volcanic field: Partridge Creek (Round Mountain),
     Presley Wash, Black Tank
West and Central Arizona:
     Sand Tanks, Burro Creek, Tank Mountains, Vulture,
     South Sauceda Mountains,
     Superior (Picketpost Mountains)
Eastern Arizona
     Cow Canyon
New Mexico
     Antelope Wells, Mule Creek, Red Hill, Gwynn Canyon
California
      Bristol Mountains (Bagdad), Obsidian Butte (Imperial County)
Nevada
     Devil Peak (Clark County)

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