GoethiteCollected by Carl Kolzer in 2011, this highly aesthetic display piece is from Jefferson County, not the more likely Park or Teller County locality that one might expect from Colorado. The piece is attention grabbing with its wonderful three dimensional quality featuring a radial group of golden black blades of Goethite which is flaring off a Goethite stem that originates from a larger radial group of equal quality Goethite blades at the base of the

lovely green color

An elegant thumbnail sized specimen of these now classic Pakistani Brookites

and that was the main reason why he kept the piece for himself

Crystals with high luster from this mine are not common

They were given the name in 1903 in honor of the world-famous mineralogist / gemologist

org states that: "The "A" in the name stands for amorphous

This historic copper mining district is best known for its beautiful Azurite and Malachite specimens

The focal point of the piece is a single

One of the very few Quartz specimens that I’ve had to offer from the Osceola Mine

A very attractive and hard to find display specimen that would make a great addition to a Calcite suite or a collection of Colorado minerals

This piece features a fairly large

This is a first-rate Zinkenite specimen