June 2014

The Velodrome Recumbent Fold - France

The Velodrome is a large recumbent fold spilled southward, formed at the end of the Tertiary (23 to 5 million years) at the …

The Hot spring

A hot spring is a spring that is produced by the emergence of geothermally heated groundwater from the Earth's crust. …

Pelagic Sediment

Pelagic sediment or pelagite is a fine-grained sediment that accumulates as the result of the settling of particles to th…

Spessartine crystals

Spessartine Spessartine stands out for its vibrant orange color, relative rarity, and association with manganese. While…

Banded Iron Formations BIF

Banded iron formations (also known as banded ironstone formations or BIFs) a re sedimentary rocks that are composed of alte…

Amazing Emerald Crystal on Crystals

The same amazing Emerald specimen but this time photographed with a real camera and not a phone camera. Note the differe…

The Triple Frontier where the Borders of 3 Countries Meet.

The Triple Frontier is the tri-border region where the borders of 3 countries meet: Argentina, Paraguay and Brazil. Whi…

Syncline Folds - California

Fitzgerald Marine Preserve, San Mateo County, CA A syncline is a fold with younger layers closer to the center of the …

Fulgurites: When Lightning Strikes Sand, Magic is Formed

Fulgurites (from the Latin fulgur meaning thunderbolt) are a variety of the mineraloid lechatelierite. They are natural…

Tectonic Settings of Metal Deposits

Ore Deposits and Plate Tectonics P late tectonics, like crustal evolution, provides a basis for understanding the distribut…

Stratigraphic Cross Section Interpretation Exercise

Determining a Sequence of Geologic Events: Law of Original Horizontality: Sedimentary rock layers were originally deposi…

The Difference between Rocks and Minerals

While both rocks and minerals are naturally occurring solid substances, there are key differences between them: M ineral —A …

Fabulous Mexican Azurite

Azurite |‪#‎Geology Formula: Cu3(CO3)2(OH)2 System:Monoclinic Colour:Azure blue, blue, light ... Lustre:Vitreous Hardnes…

The Lena Pillars

Lena's Pillars, also called Lena’s Stone Forest, is a natural rock formation about 60 km upriver from Yakutsk, in Russia…

Red Tourmaline

Red tourmaline specimen found in Yen Bai Province - North Vietnam

Preachers Rock - Norway

Preikestolen is a mountain formed like a huge pulpit towering over the Lysefjord in Rogaland, Fjord Norway. There is a c…

Elephant Rock

This rock is a fine example of an arch in the shape of an elephant. The rock is right next to the road, but as parking …

Amazing Folded Rocks

Folded rocks are a type of rock structure that forms when layers of rock are compressed and bend instead of breaking. The f…

West Salt Creek Landslide

Image of the recent West Salt Creek Landslide that occurred on May 25th at 5:44 PM local time near Collbran, Colorad…

Opal

Opal, Queensland, Australia Opal is hydrous silica ( SiO₂·nH₂O ). Technically, opal is not a mineral because it lack…

Hematite Aggregate

Hematite Aggregate Fe2O3 Botryoidal Habit A globular aggregate resembling a bunch of grapes with each round mass consis…

Natural Green Obsidian

Green Obsidian – Volcanic glass   Green obsidian is a type of volcanic glass that forms when lava rich in iron and magnesi…

Spectacular Neon Blue Lava: Kawah Ijen Volcano (PHOTOS)

Blue lava, also known as Api Biru and sulfur fire, is a rare phenomenon occurring when sulfur burns. It produces an elect…

Smoky Quartz

Smoky Quartz Tectosilicates SiO2 North Carolina, USA & Ontario, Canada Size: 20 cm