Check out the Fluorapophyllite on Stilbite, Fluorite, Gypsum var. Selenite, Wulfenite, Pyrite, Quartz on Petrified Wood, Azurite, Chalcedony Stalagmite, Native Copper, Manganoan Calcite on Quartz, Green Prehnite, Chalcanthite, Amethyst, Quartz Crystal
with Phantoms, Apatite Crystal on Calcite, Calcite, Malachite, Goosecreekite in Vug and Biotite on Calcite mineral specimens on this page.
50 km north of Ahmednagar, Maharashtra State, India
Ex-B.E. Lockhart Collection
17 x 12.5 x 10 cm
$3,400
Absolutely fabulous specimen from the famous well find a few years ago. Nicely distributed clusters of gemmy, shimmering light green Apophyllite flat top crystals on a matrix of creamy white Stilbite. Presents beautifully on a naturally formed base. These are becoming very hard to get, especially of this quality. I was recently at the 2008 Tucson Show and saw very few - so get this great specimen for your collection, as it will only increase in value.
Salinas de Otuma, Paracas, Pisco, Pisco Department,
Ica Department, Peru
17 x 7 x 6.5 cm
$150
SOLD
#J9108 Wulfenite Crystals on Matrix
Near Urumqi, Kuruktag Mountains, Xinjiang Uygur, China
7.5 x 5.5 x 3.5 cm
$250
SOLD
#J9109 Pyrite
Morococha District, Yauli Province, Junin Department, Peru
9 x 9 x 5 cm
$150
SOLD
#J9110 Quartz on Petrified Wood
Central Alabama, USA
11 x 7.5 x 5.5 cm
$80
SOLD
#J9112 Fluorapophyllite and Stilbite on Matrix
Bhusaval, Maharashtra, India
14.5 x 9 x 7 cm
$200
#J9113 Chalcedony Stalagmite (New Find)
Madhya Pradesh, India
10.5 x 8 x 7.5 cm
$250
#J9114 Native Copper
Michigan, USA
9 x 7 x 4.5 cm
$25
SOLD
#J9115 Molybdenite Crystals on Milky Quartz
Moly Hill Mine, Cadillac, Quebec, Canada
4 x 3 x 2 cm
$300
SOLD
#J9116 Manganoan Calcite Crystal on Plate of Quartz
Carmen Mine, Castrovirreyna District, Castrovirreyna Province,
Huancavelica Department, Peru
11 x 9 x 4 cm
$250
#J9117 Green Prehnite
Prospect Park Quarry, Prospect Park, Passaic County, New Jersey
8.7 x 6.2 x 2.9 cm
Ex-Richard A. Kosnar Collection
$280
SOLD
#J9118 Chalcanthite on Matrix
Planet Mine, La Paz County, Arizona
11.5 x 7 x 6.5 cm
$200
SOLD
#J9119 Amethyst
Kahur Kot, Pakistan
9 x 4.5 x 2 cm
$100
SOLD
#J9120 Quartz with Phantoms
Pailista Mine, near Diamantina, Minas Gerais, Brazil
7.5 x 5 x 4 cm
$250
#J9121 Apatite Crystal on Calcite (Repaired)
Yates Mine, Otter Lake, Quebec, Canada
10.5 x 5 x 5 cm
$65
#J9122 Calcite Included by Iron Oxides
Santa Eulalia District, Municipal de Aquilles Serdan, Chihuahua, Mexico
10 x 7.5 x 4.5 cm
$100
#J9123 Malachite
Kambove Mine, Katanga Province, Congo
9 x 6 x 4 cm
$80
SOLD
#J9124 Goosecreekite in Vug
Nasik, Maharashtra, India
8 x 6 x 4.5 cm
$75
SOLD
#J9125 Biotite on Calcite
Swakopmund, Namibia
7.5 x 5.5 x 5 cm
$300
Specimen from a new find in Namibia with a thick layered Biotite (Mica) crystal (3.5x3x2.5 cm) attached to Calcite substrate. Even better in person !!
This is the smallest specimen of several I obtained from a collector in Alabama. His name is is David Langston and here is a description of his find in his own words:
"I live in east central Alabama and have found some nice specimens of petrified wood with quartz crystals on them. The wood petrified with cavities in it that were filled with carbon. The crystals grew in these cavities. The crystals are small (the largest I have found being the size of the end of my little finger) but the clusters are awesome."
One of the names applied to quartz is Chalcedony. It is not a specific name and has been used for a variety of types of quartz. It is used here per the usage at Smithsonian to describe those types of quartz which were formed in an apparent tubular formation, like multiple flows or stalactitic/stalagmatic forms.
Nice light to dark green Fluorite crystal cluster from the famous Okorusu Mine.
Attractive plate of gemmy, golden honey colored twinned crystals of Gypsum var. Selenite.
A very good specimen of the better quality blood red tabular Wulfenite crystals on matrix from China.
An alluring complex formation of light golden Pyrite crystals on a solid mass of Pyrite with some minor Sphalerite.
A beautiful, vuggy plate of gemmy green Fluorapophyllite and creamy white Stilbite crystals on Chalcedony.
A stunning stalagmite of shimmering Chalcedony from a new locality in Madhya Pradesh. Much better in person !!
Nice piece of Native Copper from Michigan.
A complex, double terminated crystal of Manganocalcite (3.5x2.5x2 cm) is aesthetically perched on this nice plate of Quartz. Note the fluorescence of the Manganocalcite crystal in the photo below.
A gorgeous example of gemmy light green Prehnite from the well known Prospect Park Quarry.
Beautiful electric blue Chalcanthite on matrix formed by more recent runoff from the Planet Mine. It is naturally formed, but obviously not over a long geological period.
Very aesthetic specimen of Quartz var. Amethyst from a less known location. Presents well from both sides.
An interesting specimen of a Quartz crystal with many phantoms defined dramatically by inclusions/layers of Clay.
A hexagonal crystal of Apatite (6.6x1.5 cm) on Calcite. The Apatite crystal is repaired as are many of these specimens, but it appears to be only one repair in the middle, which is nicely done.
Nice example of dark chocolate brown Calcite found in the Santa Eulalia area - it's color due to inclusions of iron oxides.
Attractive plate of botroyoidal Malachite. It glistens better in person.
A lustrous crystal of rare Goosecreekite (2.5x2.5 cm) in a vug.
Molybdenum was discovered by Carl Welhelm Scheele, a Swedish chemist, in 1778 in a mineral known as molybdenite (MoS2) which had been confused as a lead compound. Molybdenum was isolated by Peter Jacob Hjelm in 1781. Today, most molybdenum is obtained from molybdenite, wulfenite (PbMoO4) and powellite (CaMoO4). These ores typically occur in conjunction with ores of tin and tungsten. Molybdenum is also obtained as a byproduct of mining and processing tungsten and copper.
Molybdenum is primarily used as an alloying agent in steel. When added to steel in concentrations between 0.25% and 8%, molybdenum forms ultra-high strength steels that can withstand pressures up to 300,000 pounds per square inch. Molybdenum also improves the strength of steel at high temperatures. When alloyed with nickel, molybdenum forms heat and corrosion resistant materials used in the chemical industry.
Two lustrous, pristine, hexagonal crystals (1.5 cm) of Molybdenite aesthetically perched on milky Quartz.
