Goethite pseudo after Marcasite on Quartz
stock #0473-JM-3355
Old Mine,Washington County Lead Mining District
Missouri,
United States
9 x 6.5 CM (cabinet)
price: $300
A very early specimen from the classic tri-state area ex. John H. Marshall collection. The matrix is all crystalized quartz well decorated with sharp Geothite that is red brown in color and shows perfectly the forms of the Marcasite crystals it has replaced. In good condition overall, there is a hard to spot repair where the specimen had cracked that probably dates to the time it was collected. 10x Magnification shows only a few chipped Geothite blades and a few quartz are bruised. By naked eye nothing is noticeable or distracting, and for such an old, delicate piece the condition is certainly fine. This would be an attractive addition to any good Tri-State suite.
Is this a Colorado Gwindel? A radiating ball of goethite crystals sits on a single flattened quartz crystal composed of several parellel growths that have a pronounced twist . The form is "gwindel like" but as the back side is less twisted I am not certain if this can be classified as one. I have asked some quartz experts and they are divided mostly because the crystal tappers to a wedge like form and is thus not fully typical. Whatever it can be classified as, it is unusual and a Colorado classic locality piece. This was broken and repaired many years ago (it was in a collection by the 1930's) and it is visible on both sides (more so in the back). There is some chipping and damage to the geothites, but it overall is in good condition.
Hematite SOLD
stock #AC-224 SOLD
Florence Mine, Egremont
Cumberland, Cumbria,
England
3.4 x 3.2 CM (miniature)
price: $250
This stalactitic form or "nipple Hematite" is a British classic, the form is distinctive and uncommon. Looking like an oversized nipple on a stalactite of hematite, this was one of a small suite sold by the Schortman brothers, this one was purchased from them in the late 60's. I have only seen two others in the past 10 years offered for sale.
Goethite (irridescent limonite)
stock #7-CNA-484
Nanping, Hechi prefecture
Guanxi,
China
13.5 x 7.7 CM (cabinet)
price: $380
Smooth and lustrous, with a golden brown color and multi-hued irridescence this is in excellent condition and very showy. Possibly the best looking piece of this find I have seen.
.jpg)
