Posts Tagged ‘woo converted’

Lava Rocks…Volcanic Rocks Lava Rocks Volcanic Rocks  are terms often used, but is really not correct. Lava is molten or liquid form rock that comes out of a volcano that is erupting. Lava is extremely hot reaching temperatures approaching 2000 degrees. The lava comes out of the volcano and cools on the earths surface depending…

Labradorite & Spectrolite Labradorite is a mineral whose beauty is not fully realized and may even be completely  missed if not viewed from the proper angle. Most Labradorite is a dull, dark grey to black looking mineral with no special attraction until the colorful shiller-effect is observed glowing on the surface. Labradorite can produce a…

Kyanite Kyanite forms bladed crystals. It is generally blue, but can also be green or gray. It has a glassy luster. Kyanite has a unique physical feature in that it has two different hardnesses. When its hardness is measured across the crystal it is normally 7 Mohs  when it is measured down the length of…

Polychrome Desert Jasper Polychrome Desert Jasper is a beautiful and colorful Jasper that can best be described as polychrome (the act of decorating things in a variety of colors) in appearance. It includes red, pink, brown and grey Jasper mixed in colorful swirling patterns. It comes from the Norcross-Madagascar Jasper fields. Norcross found Desert Jasper…

Kambaba Jasper / Stromatolites Kambaba Jasper, Stromatolites, colonial structures created by Cyanobacteria (commonly called blue-green algae) are among the oldest fossils on earth, being found in rocks over 3 billion years old. Once the dominant life form on the planet, Stromatolites are now found in only a few places, such as Madagascar. Cyanobacteria form these…

Jaspers Jasper is an opaque variety of chalcedony, which is a microcrystalline variety of the mineral Quartz. Opaque means that neither light nor images pass through. Microcrystalline quartz in its pure form is semitransparent. When a small amount of impurities or foreign materials are added to microcrystalline quartz, the color changes and its ability to…

Home Igneous Sedimentary Metamorphic Rock Cycle Minerals from Italy These mineral specimens are from our personal collection that we procured in Italy from an Italian Geologist Mineral dealer about 15 years ago. These minerals are all from Italy. Hematite Crystals from Rio Marina, Elba, Italy $40.00 Add to cart Pietra Paesina 120g Slab Polished Face…

Hematite Hematite is an iron oxide mineral. Most iron ore deposits consist mainly of hematite, magnetite, or both. Hematite gets its name from the Greek word for blood (haimo) because of the color of its powder and the red streak it leaves when scratched across a piece of unglazed porcelain. Hematite is black, but when…

Gypsum/Selenite Gypsum is one of the most common, rock-forming minerals, developing thick beds formed by the evaporation of extremely salt laden waters. Gypsum is associated with halite and sulfur. It is deposited from lakes, seawater, hot springs, volcanic moisture, and sulfate solutions in underground veins. Anhydrite in underground veins can be converted into gypsum by…

Goldstone The History of Goldstone Goldstone is a type of glass made with copper or copper salts in the presence of a reducing flame. Under normal oxidative conditions, copper ions meld into the silica to produce transparent bluish-green glass; when the reduced goldstone melt cools, the copper remains in atomic isolation and precipitates into small…