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Pacific NW minerals only Include sold minerals |
For sale is a unique pseudomorph of calcite (var: glendonite) after ikaite partially exposed within a spherical mudstone concretion. The glendonite forms an orangish-brown stellate aggregate of pyramidal crystals, formed in very cold water conditions rich in calcium and carbone/bicarbonate ions. Ikaite is metastable and readily pseudomorphs to calcite once removed from near-freezing water. These first came to the market in the early 1990's and are not common on the market today. The specimen is undamaged and comes with a specimen label.
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For sale are two wonderful specimens from the salt mine in Camp Verde, Arizona. The one on the left is a gypsum pseudomorph after glauberite and the one on the right is glauberite. Both specimens are floaters and are in excellent condition and make a great pair. The specimens are from an estate sale and were collected in 1958 (see label) from different zones within the mine. Specimen labels are included.
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For sale is an outstanding specimen of dark gray goethite and orange-brown limonite that is a complete pseudomorph after two interpenetrating cubic pyrite crystals from the Plains of Arenalejos in Spain. The specimen has superb sharp edges and corners. A specimen label is included.
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For sale is a specimen of dark gray goethite and orange-brown limonite that is a complete pseudomorph after tabular cubic pyrite crystals from the Plains of Arenalejos in Spain. The original pyrite crystals are sharp and interlocking, forming a very attractive intergrowth. A specimen label is included.
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For sale is an attractive undamaged specimen of a goethite and limonite pseudomorph after pyrite from Colorado. The striated crystal faced are preserved. The goethite is a lustrous gray-black. A specimen label is included.
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For sale is a specimen of dark gray goethite and orange-brown limonite that is a complete pseudomorph after cubic pyrite crystals from the Plains of Arenalejos in Spain. The original pyrite crystals are sharp and interlocking, forming a very attractive ring. A specimen label is included.
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MinSpin© Click | For sale is a specimen of dark gray goethite and orange-brown limonite that is a complete pseudomorph after cubic pyrite crystals from the Plains of Arenalejos in Spain. The original pyrite crystals are sharp and interlocking, forming a very attractive and complex cluster. The specimen is professionally mounted on a polished acrylic base. A specimen label is included. Enjoy the interactive MinSpinŠ viewer for this specimen.
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For sale is a very aesthetic submetallic dark-gray goethite pseudomorph after siderite with a quartz crystal for contrast from Morocco. The specimen is mounted on a polished acrylic base with removable mineral tack. A specimen label is included.
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For sale is a wonderful complete pseudomorph of goethite after pyrite from Denny Mountain in a matrix of calcite with micro quartz crystals. This specimen was self-collected in 2010. A specimen label is included. Visit my Denny Mountain Skarn page at Washington Minerals for more information about this mineral occurence.
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For sale is an incredible martite cluster (pseudomorph of hematite after octahedral magnetite) from the Marquette District in Michigan. The crystals are sharp and exhibit a dark steel-gray metallic luster. A specimen label is included.
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This is a very rare pseudomorph of calcite and quartz after aragonite. The crystal habit of the orignal aragonite crystal was quite complex with stepped terminations and small "side-car" crystals. The specimen is mounted on an acrylic base. A specimen label is included. Visit my Cadman Quarry page at Washington Minerals for more information about this mineral occurence. Visit my Cadman Quarry page at Washington Minerals for more information about this mineral occurence.
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For sale is a classic pseudomorph specimen of hematite (core) and slender micro quartz crystals (rim) after epidote from Bessemer Ridge, King county, Washington. The specimen is in excellent condition and is mounted on an acrylic base with hot glue (removable). A specimen label is included Visit my Bessemer Ridge page at Washington Minerals for more information about this mineral occurence.
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