Mckelveyite-(y)
Mckelveyite-(Y)
A variety of Minerals
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What is Mckelveyite-(y)?
Mckelveyite-(Y) is a hydrated sodium, barium, yttrium, and uranium–containing carbonate mineral, with the chemical formula Ba3Na(Ca,U)Y(CO3)6·3H2O.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Mckelveyite-(y) before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Mckelveyite-(y) Localities Map
See where Mckelveyite-(y) is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Formation of Mckelveyite-(y)
It was first described in 1965 from deposits in the Green River Formation, Sweetwater County, Wyoming, and is named after Vincent Ellis McKelvey (1916–1985), a former director of the United States Geological Survey. It occurs associate with trona layers in the Green River Formation of Wyoming and has been reported from an alkalic intrusive, the Khibiny Massif in the Kola Peninsula of Russia. It occurs in association with ewaldite, acmite, biotite, quartz, labuntsovite, searlesite and leucosphenite in the Green River Formation. In the Khibiny Massif it occurs with ewaldite, belovite-(Ce), fluorite, nenadkevichite, ancylite-(Ce), synchysite-(Ce), kukharenkoite-(Y), burbankite, calcite, barite and orthoclase. In the Khanneshin complex, Afghanistan it occurs with dolomite, calkinsite-(Ce), carbocernaite, khanneshite and barite. It has also been reported from the Mont Saint-Hilaire intrusive complex in Quebec. A related neodymium-rich mineral, mckelveyite-(Nd) has been described for an occurrence in the Vuoriyarvi alkaline-ultrabasic massif on the Kola Peninsula. However, the mineral has not been approved by the IMA.
Quick Facts
Physical Properties
- Color
- Yellow, orange-brown, gray, greenish-brown, nearly black.
- Hardness (Mohs)
- 3.5 - 4
- Density
- 3.37 g/cm³
Chemical Properties
- Chemical Formula
- NaCaBa3Y(CO3)6 · 3H2O
- Elements
- Ba, C, Ca, H, Na, O, U, Y
Also Known As
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Mckelveyite-(y) FAQs
How do I identify Mckelveyite-(y)?
Mckelveyite-(y) can be identified by its hardness of 3.5 - 4 on the Mohs scale, Yellow color. Look for these key characteristics when examining specimens.
What color is Mckelveyite-(y)?
Mckelveyite-(y) typically appears in Yellow, orange-brown, gray, greenish-brown, nearly black.. Color can vary depending on impurities and formation conditions.
How hard is Mckelveyite-(y)?
Mckelveyite-(y) has a hardness of 3.5 - 4 on the Mohs scale. This gives it moderate hardness.
What is the formation of mckelveyite-(y) of Mckelveyite-(y)?
It was first described in 1965 from deposits in the Green River Formation, Sweetwater County, Wyoming, and is named after Vincent Ellis McKelvey (1916–1985), a former director of the United States Geological Survey. It occurs associate with trona layers in the Green River Formation of Wyoming and has been reported from an alkalic intrusive, the Khibiny Massif in the Kola Peninsula of Russia. It occurs in association with ewaldite, acmite, biotite, quartz, labuntsovite, searlesite and leucosphenite in the Green River Formation. In the Khibiny Massif it occurs with ewaldite, belovite-(Ce), fluorite, nenadkevichite, ancylite-(Ce), synchysite-(Ce), kukharenkoite-(Y), burbankite, calcite, barite and orthoclase. In the Khanneshin complex, Afghanistan it occurs with dolomite, calkinsite-(Ce), carbocernaite, khanneshite and barite. It has also been reported from the Mont Saint-Hilaire intrusive complex in Quebec. A related neodymium-rich mineral, mckelveyite-(Nd) has been described for an occurrence in the Vuoriyarvi alkaline-ultrabasic massif on the Kola Peninsula. However, the mineral has not been approved by the IMA.
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