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Vauxite:
- A phosphate mineral
- Forms via the alteration of apatite
- Has the same formula as metavauxite, but a different crystal structure
- Named after George Vaux Jr. (1863-1927), an American attorney and mineral collector #minerals
Vauxite:
- A phosphate mineral
- Forms via the alteration of apatite
- Has the same formula as metavauxite, but a different crystal structure
- Named after George Vaux Jr. (1863-1927), an American attorney and mineral collector #minerals
Picromerite:
- A hydrous sulphate mineral
- Forms in bedded salt deposits in the ocean and as a sublimate in fumaroles
- Its name comes from the Greek words "πικρός/pikros" (bitter) and "μέρος/meros" (part) because it contains magnesium #minerals
Picromerite:
- A hydrous sulphate mineral
- Forms in bedded salt deposits in the ocean and as a sublimate in fumaroles
- Its name comes from the Greek words "πικρός/pikros" (bitter) and "μέρος/meros" (part) because it contains magnesium #minerals
Riebeckite:
- An amphibole group mineral
- Forms in some volcanic rocks and schists
- Blue asbestos (crocidolite) is fibrous riebeckite
- Named after Emil Riebeck (1853-1885), mineralogist and explorer #minerals #MineralMonday
Riebeckite:
- An amphibole group mineral
- Forms in some volcanic rocks and schists
- Blue asbestos (crocidolite) is fibrous riebeckite
- Named after Emil Riebeck (1853-1885), mineralogist and explorer #minerals #MineralMonday
Alunite:
- A sulphate mineral
- A source of aluminium and potassium
- Forms when acid solutions alter potassium-rich volcanic rocks
- Its name comes from the Latin word "alunit" (alum) #minerals
Alunite:
- A sulphate mineral
- A source of aluminium and potassium
- Forms when acid solutions alter potassium-rich volcanic rocks
- Its name comes from the Latin word "alunit" (alum) #minerals
Phenakite:
- A silicate mineral
- Forms in pegmatite veins and mica-schists
- Sometimes used as a gemstone
- Its name comes from the Greek word "φέναξ/phénax" (deceiver) because it looks like quartz #minerals
Phenakite:
- A silicate mineral
- Forms in pegmatite veins and mica-schists
- Sometimes used as a gemstone
- Its name comes from the Greek word "φέναξ/phénax" (deceiver) because it looks like quartz #minerals
Benstonite:
- A carbonate mineral containing barium
- Fluoresces red under UV and x-rays
- Forms in baryte deposits and in some carbonatites
- Named after Orlando J. Benston (1901-1966) an American ore metallurgist who collected the first specimens #minerals
Benstonite:
- A carbonate mineral containing barium
- Fluoresces red under UV and x-rays
- Forms in baryte deposits and in some carbonatites
- Named after Orlando J. Benston (1901-1966) an American ore metallurgist who collected the first specimens #minerals
Pyrolusite:
- Mineral form of manganese dioxide
- A very common manganese mineral
- An important manganese ore
- Used as a pigment in ancient cave paintings
- Forms in oxidised manganese-bearing hydrothermal deposits #minerals
Pyrolusite:
- Mineral form of manganese dioxide
- A very common manganese mineral
- An important manganese ore
- Used as a pigment in ancient cave paintings
- Forms in oxidised manganese-bearing hydrothermal deposits #minerals
#catte.art
#catte.art
Ruby:
- The red/pink variety of corundum
- Its colour is caused by chromium
- Heat treatment can improve its colour
- 9 on the Mohs hardness scale
- Its name comes from the Latin word "ruber" (red) #minerals
Ruby:
- The red/pink variety of corundum
- Its colour is caused by chromium
- Heat treatment can improve its colour
- 9 on the Mohs hardness scale
- Its name comes from the Latin word "ruber" (red) #minerals
Diopside:
- Pyroxene mineral
- Forms in ultramafic igneous rocks, xenoliths & metamorphic rocks
- Can turn into chrysotile when hydrothermally altered
- Name comes from the Greek "dis" (twice) & "òpsè" (face) because its vertical prism can be orientated in two ways #minerals
Diopside:
- Pyroxene mineral
- Forms in ultramafic igneous rocks, xenoliths & metamorphic rocks
- Can turn into chrysotile when hydrothermally altered
- Name comes from the Greek "dis" (twice) & "òpsè" (face) because its vertical prism can be orientated in two ways #minerals
Hummerite:
- A potassium magnesium vanadate mineral
- Forms via the leaching of vanadium oxide ores
- Named after its type locality Hummer Mine in Paradox Valley, Colorado, USA #minerals #MineralMonday
Hummerite:
- A potassium magnesium vanadate mineral
- Forms via the leaching of vanadium oxide ores
- Named after its type locality Hummer Mine in Paradox Valley, Colorado, USA #minerals #MineralMonday
Leadhillite:
- A carbonate mineral
- Has a high density since it contains lead (~2.5 times more dense than quartz)
- Can be yellow, blue or green
- Forms in the oxidised zone of lead deposits
- Named after Leadhills in Scotland, its type locality #minerals #MineralMonday
Leadhillite:
- A carbonate mineral
- Has a high density since it contains lead (~2.5 times more dense than quartz)
- Can be yellow, blue or green
- Forms in the oxidised zone of lead deposits
- Named after Leadhills in Scotland, its type locality #minerals #MineralMonday
Sylvanite:
- A telluride mineral
- Contains gold and silver
- Forms in hydrothermal vein deposits
- Named after sylvanium, the obsolete name for the element tellurium. Its name is also partially derived from Transylvania, where it was discovered #minerals #MineralMonday
Sylvanite:
- A telluride mineral
- Contains gold and silver
- Forms in hydrothermal vein deposits
- Named after sylvanium, the obsolete name for the element tellurium. Its name is also partially derived from Transylvania, where it was discovered #minerals #MineralMonday
Hematite:
- Very common iron oxide mineral
- Its red powder is used as a pigment
- Forms in a variety of volcanic, sedimentary & metamorphic environments
- Its name comes from the Greek words "αιματίτις λίθος/aematitis lithos" (blood stone) because of its red colour #minerals
Hematite:
- Very common iron oxide mineral
- Its red powder is used as a pigment
- Forms in a variety of volcanic, sedimentary & metamorphic environments
- Its name comes from the Greek words "αιματίτις λίθος/aematitis lithos" (blood stone) because of its red colour #minerals
Glauconite:
- A mica group mineral
- Forms in marine environments
- Turns yellow when oxidised
- The "green earth" pigment is made from glauconite
- Its name comes from the Greek word "γλαυκός/glaukos" (blue-green) because of its colour #minerals
Glauconite:
- A mica group mineral
- Forms in marine environments
- Turns yellow when oxidised
- The "green earth" pigment is made from glauconite
- Its name comes from the Greek word "γλαυκός/glaukos" (blue-green) because of its colour #minerals
Smoky Quartz:
- A grey to black variety of quartz
- Its colour is due to a combination of Al3+ replacing Si in the crystal lattice and gamma irradiation
- Its colour fades when exposed to UV light and heat
- Forms in igneous rocks #minerals
Smoky Quartz:
- A grey to black variety of quartz
- Its colour is due to a combination of Al3+ replacing Si in the crystal lattice and gamma irradiation
- Its colour fades when exposed to UV light and heat
- Forms in igneous rocks #minerals