Tags » Mineralogy

Geopic of the week: Ice

As a naturally occurring, inorganic, solid, crystalline substance with a constant chemical formula, ice is in fact considered a mineral. By the same logic, water, which is the liquid form, is lava. 17 more words

GeoPic Of The Week

I Wanna See Your Peacock (Ore)

I couldn’t decide which one I wanted to use, so both seemed like a good idea.  This is a small sample of Bornite, also known as peacock ore, that I got down in Arkansas on vacation.   14 more words

Photography

Geopic of the week: Arkansas Wavellite

The above picture shows two examples of the mineral wavellite: an aluminum phosphate mineral prized by rock and mineral collectors and fairly common in the Ouachita Mountains. 185 more words

GeoPic Of The Week

Twinning

Twinning is a phenomenon in mineralogy whereby a single crystal of a mineral has two or more parts in which the crystal lattice is differently orientated. 290 more words

Igneous Petrology

How the Earth's Mystery Mineral Got Its Name

We seldom get to see a sample of the Earth’s most common mineral. It resides within the mantle at extreme heat and pressure not found on the surface. 1,432 more words

History

Part II- Ten New Diamonds from NC

One of the comments on the earlier blog post came from Richard Jacquot:

rick@wncrocks.com commented …In an article published with Ed Speer in Volume 1, Issue 2 of American Rockhound magazine in June, 2014, we discussed 15 diamonds that were found in Reedy Creek in Mecklenburg County. 949 more words

Geology