What is autunite made from?
autunite, phosphate mineral, hydrated calcium and uranium phosphate [Ca(UO2)2 (PO4)2·10–12H2O], that is an ore of uranium. It forms translucent to transparent, yellow to pale-green crystals, scaly masses, or crusts in hydrothermal veins and pegmatites, where it occurs as an alteration product of uraninite.
Where can I get autunite?
Autunite was discovered in 1852 near Autun, France, which is also autunite’s namesake. It occurs as an oxidation product of uranium minerals in granite pegmatites and hydrothermal deposits….
| Autunite | |
|---|---|
| Fracture | uneven |
| Mohs scale hardness | 2-2.5 |
| Luster | Vitreous – pearly |
| Streak | Pale yellow |
Where is autunite found throughout the world?
Autunite Mineral Occurrence It is mainly found in uranium-bearing pegmatites around the world. This mineral was first discovered near Autun, France in 1852. Presently it is found from the Daybreak Mine near Mount Spokane in Washington. Spruce Pine in North Carolina is another rich source of this material.
What are the radioactive minerals?
Examples of common radioactive minerals include Autunite (hydrated calcium uranium phosphate), Brannerite (uranium titanate), Car- notite (potassium uranium vanadate), Monazite (a mixed rare earth and thorium phosphate), Thorianite (thorium dioxide) and Uraninite (uranium dioxide).
What is the cleavage of autunite?
Autunite Mineral Data
| General Autunite Information | |
|---|---|
| Chemical Formula: | Ca(UO2)2(PO4)2•10-12(H2O) |
| Cleavage: | {001} Perfect, {100} Poor, {010} Poor |
| Color: | Yellow, Pale yellow, Lemon yellow, Greenish yellow, Pale green. |
| Density: | 3.1 – 3.2, Average = 3.15 |
What type of rock is monazite?
Monazite is a rare phosphate mineral with a chemical composition of (Ce,La,Nd,Th)(PO4,SiO4). It usually occurs in small isolated grains, as an accessory mineral in igneous and metamorphic rocks such as granite, pegmatite, schist, and gneiss.
What does bornite look like?
Bornite has a brown to copper-red color on fresh surfaces that tarnishes to various iridescent shades of blue to purple in places. Its striking iridescence gives it the nickname peacock copper or peacock ore.
What gems are radioactive?
Natural radioactive gemstones
| Mineral | Color | Source of Radiation |
|---|---|---|
| Ekanit | green, light brown | Thorium (Th) |
| Heliodor (Rössing deposit, Namibia) | yellow-green | Uran (U) |
| Monazite | brownish yellow | Thorium (Th) |
| Titanite (*) | yellow to brown, green to black | Uran (U), Ce, Eu, La und Th |
What is the most radioactive rock?
granite
The rock which commonly contains the highest radioactive element content is granite. Granite evolves by the concentration of light weight minerals from magmas generated deep within the crust.
Can I touch chalcanthite?
Chalcanthite is a very fragile mineral, and care should be taken when handling any specimen.
