Smaller Mineral Specimens
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Berg Aukas Mine, Grootfontein, Otjozondjupa Region, Namibia
3.5 x 1.7 x 1 cm
This specimen features shimmering, silvery-bronze colored crystals arranged in a fan-like form. The Descloizite specimens from this locality are considered to be the undisputed world champion for this mineral species.
Pitwak Mine, Ladjuar Medam, Sar-e Sang, Koksha Valley, Badakhshan, Afghanistan
4 x 4 x 3 cm
A group of Marialite crystals from small finds made 7-8 years ago. The Marialite crystals are pseudomorphing to Orthoclase. This specimen seems to have almost completely altered to Orthoclase as very little fluorescence is observed. The blue color of these specimens is thought to be most likely due to minute Fe impurities that transition between Fe+2 and Fe+3.
Beitbridge District, Matabeleland South, Zimbabwe
4.6 x 3.7 x 3 cm
A blue-gray crystal of Sapphire with a little bit of Biotite. This crystal has some lustre and is complete except for a small area of contact. I am told that the mine collapsed some time ago and there are no plans to re-open it.
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Luck Stone Quarry, Bealeton, Fauquier County, VA
6.7 x 5.5 x 5.6 cm
This lustrous specimen of mint-green-colored Prehnite features crystals up to 1 cm in size. Mineral specimens of any species are extremely rare from this obscure Virginia quarry. In fact, mindat.org only has 2 examples of Prehnite from this location.
#3 Shaft, Northwestern Mine, Central, Keweenaw County, MI
3.7 x 2.1 x 1.1 cm
A spinel-twinned example of Copper with an elongate form from one of Michigan's oldest Copper mines. This specimen has a rich, mahogany-colored patina. The Northwestern Mine operated from 1845-1865. 313,000 lbs. of refined Copper was recovered from the mine during it's short life span.
Lower New Street Quarry, Paterson, Passaic County, NJ
3.7 x 3.1 x 2.4 cm
A complete, hemispherical aggregate of yellow-orange Stilbite perched on matrix. This specimen is good example of Stilbite from the US and particularly from this locale.
Daoping Mine, Guilin Prefecture, Guangxi Zhuang Autonomous Region, China
2.4 x 2.4 x 1.5 cm.
The Daoping mine is China's premier locality for world-class Pyromorphite crystals. The amazing thing is that amongst the multitude of Pyromorphite to be found from this all-but-defunct location there were a small number of extremely large (for the species) single crystals. These chunky single crystal specimens made their debut at Tucson in 2008 and were quickly bought by savvy collectors.
Milpillas Mine, Cuitaca, Santa Cruz Municipality, Sonora, Mexico
2.4 x 2 x 1.3 cm
A well-formed and lustrous crystal of Azurite from Mexico's Milpillas Mine. This specimen has a deep blue color and is a really good example of this material. Azurite specimens from this location hold their own when compared to the best examples from Touissit, Tsumeb or Zacatecas.
Yangshuo Mine, Guilin Prefecture, Guangxi Zhuang Region, China
2.5 x 1.7 x 1.1 cm
A small spray of Pyromorphite crystals that have been coated or partially replaced by the Lead mineral Plumbogummite. From a pocket collected in November of 2014.
ACF Mine, Mibladen mining District, Midelt Province, Drâa-Tafilalet Region, Morocco
3.3 x 2.6 x 1.4 cm
A good-sized, hoppered crystal of Morocco's signature mineral, Vanadinite. This richly-colored specimen is complete all around and makes for an eye-catching display piece.
Belt Mine, Mass City, Ontonagon County, MI
4.2 x 1.7 x 1.1 cm
A curved and of elongated specimen of crystallized Copper. This specimen hails from a locality that is seldom represented in collections. The mine organized in 1848. Work continued into 1853, when the mine was sold to the Bohemian Mining Co. Operations were sporadic until 1882, when the Bohemian and Great Western Mining Co's. were merged, then bought by the Belt Mining Co. Around 1890, mining operations ceased. In 1900, the property was bought by the Arctic Copper Mining Co. and in 1905 resold to the Lake Copper Co., which changed the name of the mine to Lake. The Belt Mine produced approx. 666,000 lbs. of refined Copper.
Messina Mine, Musina, Vhembe District, Limpopo, South Africa
5.3 x 3.3 x 2.7 cm
A group of Quartz crystals that is heavily included with pistachio-green-colored crystals of Epidote.
variety Selenite (double terminated)
Lake Gilles, Corunna Station, Australia
3.6 x 3.9 x 4.5 cm.
When one thinks of Selenite from Australia, on thinks of the needle-like sprays that are quite abundant. What we have here is a much more uncommon crystal from Australia. This Selenite is complete all around and has a textbook-like form with a fishtail termination on its bottom. This Selenite is much clearer than it appears in the photo.
Santa Rosa Mine, Santa Rosa, Municipio de Mazapil, Zacatecas, Mexico
2.2 x 1.5 x 1.3 cm
This unusual mineral association is from a find made in the early 1960's. This specimen features nodules of the copper mineral Azurite in a matrix of Prosopite. Prosopite usually forms as an alteration product of Topaz in Topaz-rich greisens (as in Altenberg, Saxony and Schlaggenwald, Bohemia), and in Cryolite-bearing pegmatites, either as a primary mineral or as an alteration product of Cryolite. What led to the formation of Prosopite in this instance remains a mystery.
Arsenopyrite with Quartz
Yaogangxian Mine, Chenzhou Prefecture, Hunan, Central South Region, China
4.2 x 2 x .8 cm.
A very interesting crystal that has a great luster on the top crystal face and interesting iridescent patina covering the remainder of the crystal with a mass of Quartz crystals covering the upper portion of the crystal.
with Paratacamite & Boleite
Amelia Mine, Boleo District, Santa Rosalía, Municipio de Mulegé, Baja California Sur, Mexico
2.7 x 1.5 x 1 cm
Anglesite crystals are not that uncommon, but from the Amelia Mine they are almost unheard of. When they are found they typically measured in millimeters. This example, at 2.7 cm, is huge by Boleo District standards. And if that isn't enough for you, this double-terminated crystal also has inclusions of Boleite as well as clusters of Paratacamite on its surface, some of which are are either covering Boleite crystals or are pseudomorphs after Boleite.
Nikolaevskiy Mine, Dal'negorsk, Primorskiy Kray, Russia
4.2 x 4.2 x 2.4 cm.
An unusual, partially hollow ball of tan Siderite with scattered, lustrous, translucent Calcite blades from the classic Nikolaevskiy Mine, Dal'negorsk, Russia. This is classic material from this mine and not often seen these days.
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