Apatite is now a group name for a series of related minerals.

Semantic Scholar extracted view of "The genesis of the Ashram REE deposit, Quebec: Insights from bulk-rock geochemistry, apatite-monazite-bastnäsite replacement reactions and mineral chemistry" by C. Beland et al.

Britholite group minerals (REE,Ca) 5 [(Si,P)O 4 ] 3 (OH,F) are widespread rare-earth minerals in alkaline rocks and their associated metasomatic zones, where they usually are minor accessory phases. An exception is the REE deposit Rodeo de los Molles, Central Argentina, where fluorbritholite-(Ce) (FBri) is the main carrier of REE and is closely …

Apatite is widely distributed in all rock types ( igneous, sedimentary and metamorphic ), but usually as small disseminated grains, or cryptocrystalline fragments. Large, well-formed crystals can be found in certain contact metamorphic rocks.

Phosphate rock in Egypt is composed primarily of apatite as the main mineral in composition while non-phosphatic minerals usually include quartz, calcite, dolomite, and clay minerals (El-Anwar et al. 2019 ). Apatite mineral is insoluble and so the mineral cannot be applied directly as a fertilizer except under conditions of acidic soils.

The origin of magnetite-apatite rocks probably can be explained by the silicate-salt immiscibility that occurred at the alkaline syenite crystallization stage.

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Diabase, also known as dolerite, is a type of igneous rock that holds significance in the field of geology due to its unique characteristics and formation process. It is an intrusive rock, which means it forms from molten magma that cools and solidifies beneath the Earth's surface. Diabase is often confused with basalt due to their similar …

Apatite. Discovered in 1860, this mineral is named from the Greek word "to deceive" as it was often confused with other minerals. It is widely disseminated as an accessory constituent in all classes of rocks: …

Apatite is ubiquitous in igneous, metamorphic, and sedimentary rocks and is significant to more fields of study than perhaps any other mineral. To help understand why, one needs to know apatite's structure, composition, and crystal chemistry. Apatite has a robust hexagonal atomic framework based on two distinct metal-cation sites ( M 1, M 2), …

Morocco holds the world's largest deposits of sedimentary phosphate rocks, and also possesses several alkaline complexes with the potential to bear igneous phosphate ores that are still largely ...

Apatite is a very common early-formed accessory mineral in nearly all type of igneous rocks. Apatite is also concentrated by late magmatic segregation, and it appears in granite pegmatite. • Form: Tiny euhedral …

Interpretation of the mineralizing environment of magnetite-apatite deposits remains controversial with theories that include a hydrothermal or magmatic origin or a combination of those two processes. To address this controversy, we have analyzed the trace element content of magnetite from precisely known geographic locations and …

Blue Apatite formed millions of years ago in igneous and metamorphic rocks under high heat and pressure. It crystallized from hot mineral-rich solutions in veins and cavities known as hydrothermal deposits.

New York Garnet photo provided by Fine Mineral Photography - @finemineralphotography. Get ready to embark on a sparkling journey beneath New York's surface, where a mesmerizing array of rocks, minerals, and gems awaits your curious eyes. This state is a true gem, boasting an extraordinary variety of geological treasures …

Generally, apatite is found as an accessory mineral in almost all natural rock types (sedimentary, igneous, and metamorphic), but it is also occasionally a main rock-forming mineral in some ...

Mount Apatite Park is a 325-acre wooded park located in the western portion of the city. The park offers a wide variety of recreational opportunities not often found in municipal park settings. Rock hounds have known about this area for over 150 years, when the first discoveries of gem-quality tourmaline were found there. Since then, the area has …

Apatite is a mineral of medium hardness and is used to represent 5 on the Mohs scale. Mineral Properties. Chemical Formula: Ca 5 (PO 4) 3 (F,Cl,OH) Color (s): blues, greens, blue green can be colorless, pink, or brown. Streak: white. Luster: Vitreous. Transparency: Transparent to translucent. Crystal Habits: Tabular, prismatic crystals, massive.

Apatite (Ca 5 (PO 4) 3 (OH,F,Cl)) is an ubiquitous accessory phosphate mineral found in many types of rocks and environments. This is particularly true with regards to ore deposits. This mineral has several …

Monazite, xenotime, and allanite are REE 1 -minerals sensu stricto because lanthanides (La…Lu) and yttrium are critical constituents in them. Apatite does not require REE, but because it contains substantial REE in many rocks, it is included in this review. All four minerals also host unusually high radionuclide concentrations, notably Th and U, …

Apatite is the name of a group of phosphate minerals that have a familiar chemical composition and share the same physical properties. They are a significant component of phosphorite and used to make chemicals, acids, and fertilizers. Apatite has a consistent hardness and serves as the index mineral for a hardness of 5 in the Mohs Hardness Scale.

Apatite is widely distributed in all rock types; igneous, sedimentary and metamorphic, but is usually just small disseminated grains or cryptocrystalline fragments. Large well formed crystals though can be found in certain contact metamorphic rocks.

Because arc rocks are a product of this multi-stage, polybaric process, unravelling the complete history of magmatic evolution using bulk-rock chemistry alone can be challenging. However, accessory minerals such as apatite are capable of capturing discrete periods of melt evolution during differentiation.

Green Apatite belongs to the mineral group 'Apatite', a term derived from the Greek word 'apate', meaning 'deception', due to its often confusing resemblance to other minerals.

Apatite is a ubiquitous accessory mineral found in most magmatic rocks and is often the only U-bearing mineral available to date mafic rocks because primary zircon and/or baddeleyite are not present. In this paper, U-Pb LA-ICP-MS dating of apatite was applied to seven different dike and sill samples of dolerite from the Variscan belt of …

Chemical and textural relations of britholite- and apatite-group minerals from hydrothermal REE mineralization at the Rodeo de los Molles deposit, Central Argentina

Indeed, all the major rock-forming minerals at Ashram exhibit hydrothermal textures, namely secondary carbonate vug infill, veins of apatite or fluorite, and multiple generations of both minerals.

We here present the various defining geochemical characteristics of apatite from different rocks and crystallization environments, the applicability of geo- and thermo-chronology to apatite, and the behaviour of apatite in sedimentary systems.

Apatite [Ca 5 (PO 4 ) 3 (F,Cl,OH)] is a common accessory mineral in igneous, metamorphic and clastic sedimentary rocks and one of the important carrying minerals for volatiles, rare earth elements ...