Wasatch National Forest and Salt Lake Valley, view from Easy Street near Miners Camp in Snowbird Ski Area. Utah, January 10, 2008
Little Cottonwood Canyon and Salt Lake Valley, view from Miner s Road in Gad Valley in Snowbird Ski Area. Utah, January 10, 2008
Seller with fodder and mineral blocks in Wholesale Markets area. Doha, Qatar, February 25, 2012
- a trip to Mineral Wells with SMU rock climbing club 2/13/97 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- retreat in Mo Ranch, Texas Hill Country, March 12 - 14 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
Copper minerals in white sand from eroded cliffs along the blue trail in western Timna Park, near Eilat. The Middle East, April 25, 2001
- a trip to Mineral Wells with SMU rock climbing club 2/13/97 - downtown Fort Worth (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- retreat in Mo Ranch, Texas Hill Country, March 12 - 14 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- retreat in Mo Ranch, Texas Hill Country, March 12 - 14 - State Capitol in Austin (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- east to downtown Dallas 3/8/97 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- retreat in Mo Ranch, Texas Hill Country, March 12 - 14 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
Seller with fodder and mineral blocks in Wholesale Animal Market. Doha, Qatar, February 21, 2012
Forest and snow on a slope of Superior Peak across Little Cottonwood Canyon, view from Easy Street near Miners Camp in Snowbird Ski Area. Utah, January 10, 2008
- Dallas, Lovers Ln. behind North Tollway 2/26/97 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- a trip to Mineral Wells with SMU rock climbing club 2/13/97 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- a trip to Mineral Wells with SMU rock climbing club 2/13/97 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- a trip to Mineral Wells with SMU rock climbing club 2/13/97 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- retreat in Mo Ranch, Texas Hill Country, March 12 - 14 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- a trip to Mineral Wells with SMU rock climbing club 2/13/97 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- a trip to Mineral Wells with SMU rock climbing club 2/13/97 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- the lab in SMU Dept. of Chemistry (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- retreat in Mo Ranch, Texas Hill Country, March 12 - 14 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
Camel leaking pressed minerals at sunrise in Camel Market (Souq). Doha, Qatar, February 14, 2012
Camels leaking pressed minerals and salt at sunrise in Camel Market (Souq). Doha, Qatar, February 14, 2012
- game party in H. P. Presbyterian Church 2/28/97 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- retreat in Mo Ranch, Texas Hill Country, March 12 - 14 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
- a trip to Mineral Wells with SMU rock climbing club 2/13/97 (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
Micro-tunnels left by leaf miners. Heritage Trail in Lafayette, near Battle Ground, Indiana, May 16, 1999.
Camel with red lips tinted by salt minerals in Camel Market (Souq), Wholesale Markets area. Doha, Qatar, March 4, 2012
Pair of camels leaking pressed salt and minerals in Camel Market, Wholesale Markets area. Doha, Qatar, March 21, 2012
Group of camels leaking pressed salt and minerals in Camel Market, Wholesale Markets area. Doha, Qatar, March 21, 2012
Two pebbles of a mineral Yooperlite (syenite rock rich with fluorescent sodalite) glowing under ultraviolet light. College Station, Texas, February 29, 2024
Sample of a mineral syenite rock rich with fluorescent sodalite (Yooperlite) glowing under ultraviolet light. College Station, Texas, February 29, 2024
Dark patterns on a beach in shallow waters that are a classic example of heavy mineral sorting (often called a "placer" formation). Heavy Mineral Patterns: Dark, flame-like streaks of black and purplish sand (magnetite, ilmenite, and garnet) sorted by wave action. Quartz-Feldspar Base: A background of lighter golden-brown sand composed of quartz and feldspar grains. Hydrodynamic Sorting: Intricate shapes created by the "swash and backwash" of waves, which wash away lighter grains and leave heavier minerals behind. Sestroretsk near Saint Petersburg, Russia, October 9, 2025
Dark patterns on a beach in shallow waters that are a classic example of heavy mineral sorting (often called a "placer" formation). Heavy Mineral Streaks: The dark purplish-black areas are concentrated deposits of heavy minerals (magnetite, ilmenite, garnet). Light Mineral Patches: The beige/tan areas are the lighter quartz and feldspar sands. Flow Patterns: The sand is sculpted into fluid, wavy shapes ("swash marks"), showing exactly where water flowed and separated the grains based on density. Sestroretsk near Saint Petersburg, Russia, October 9, 2025
Dark patterns on a beach in shallow waters that are a classic example of heavy mineral sorting (often called a "placer" formation). Gradient Effect: One can clearly see the "tail" of the sorting process, where the black mineral density decreases, creating a dusty or shadowed effect over the golden sand. Micro-relief: The lighter sand patches appear slightly raised or pillowy (like small dunes), while the darker heavy minerals settle into the troughs and lower edges, outlining the relief. Sestroretsk near Saint Petersburg, Russia, October 9, 2025
Almost certainly Ceratodon purpureus -- commonly known as Fire Moss or Redshank. It is the quintessential colonizer of exposed, compact, bare mineral soil. Fort Boggy State Park. Leon County, Texas, February 21, 2026
