Acute Disseminated Encephalomyelitis (ADEM) is a rare inflammatory demyelinating disease of the central nervous system. ADEM is thought to be an autoimmune disorder in which the body's immune system mistakenly attacks its own brain tissue, triggered by an environmental stimulus in genetically susceptible individuals. In most cases, ADEM is ...

In the sample set studied, the lowest total rare earth mineral content is 1.68 wt%, and the highest is 5.73 wt% (App. Table A1). Rare earth minerals are …

Disseminated magnetite is also present in the potassic alteration in latite, which. ... Rare-earth elements are highest in samples V ath 41 and V ath 42 (Figure 5). The.

The mineralogical studies show that the rare earth minerals appear in the order of transition from the phosphate minerals in the brine-melt stage (fine dolomitic facies), through the fluorcarbonate minerals in the hydrothermal stage (disseminated, banded and massive mineralization), to the Ba-fluorcarbonate minerals in the Paleozoic …

Gamma-ray spectrometric and semiquantitative spectrographic analytical data of the thorium and rare-earth disseminated deposits in the southern Bear Lodge Mountains, Wyoming: Series title: Open-File Report: Series number: 80-785: DOI: 10.3133/ofr80785: Year Published: 1980: Language: English: Publisher: U.S. Geological Survey: Description

Due to rare earth minerals are usually finely disseminated (sometimes under 10 μm) and intimately associated with gangue minerals, the fine grind is necessary in …

The disseminated deposits contain thorium and rare-earth minerals in a matrix consisting principally of potassium feldspar, quartz, and iron and manganese oxides. Total rare …

Rare earth elements (REEs) are increasingly critical to the high-technology and low-carbon economy. With a shift to sustainable socioeconomic development that aims to be less fossil fuel dependent, global demand for REEs continues to rise, despite their uncertain supply chain and high environmental impact of production. Here, we review …

This is a rare case of secondary disseminated cysticercosis caused by autoinfection in a taeniasis carrier. Taeniasis caused by T. solium was confirmed by copro-PCR and copro-LAMP with microscopic observation of taeniid eggs. Cysticercosis confirmed by histopathology of resected subcutaneous lesion, neuroimaging, and …

1020m deep core drilling into f resh carbonatite below the current Rare Earth Elements (REE) open pit mine. The exploration drilling program was designed to expand the ore body knowledge of Mt Weld by understanding the primary Rare Earth Elements mineralisation and the geology and structure of the carbonatite host rock.

Integral Metals Corp. is a mining exploration company with a primary focus on critical minerals and chipmaking metals present in pegmatites within it's owned Zig Zag Property. Positioned in Ontario's prominent mineral-producing region and recognized as a top 10 global mining jurisdiction, the Zig Zag Property encompasses 8 mining cell claims, …

The rare earth elements (REEs) in the scheelite samples, especially the variation of the δEu (EuN/((SmN × GdN)0.5)) values, record the change in oxygen fugacity.

Niobium, rare earth elements (REE = lanthanides + Y), and zirconium, are widely used in high-tech applications. ... Ta-Nb oxides in the Yichun deposit occur disseminated in a topaz lepi- dolite ...

The rare earth elements (REE) are a set of seventeen metallic elements. These include the fifteen lanthanides on the periodic table plus scandium and yttrium. Rare earth elements are an essential part of many high-tech devices. The U.S. Geological Survey news release "Going Critical" explains:

The rare-earth elements ( REE) are a group of 17 elements on the periodic table, consisting of the lanthanoid series, and scandium and yttrium. While some REEs are not particularly rare in terms of average abundance in the Earth's crust, they are seldom found in concentrations high enough for economic extraction, and global annual production ...

The Journal of Rare Earths reports studies on the 17 rare earth elements. It is a unique English-language learned journal that publishes works on various aspects of basic theory and applied science in the field of rare earths (RE). The journal accepts original high-quality original research papers and review articles with inventive content, and ...

2.2.1 Occurrence. Rare earth minerals occur as fluorites, oxides, tantalates, carbonates, phosphates, sulfates, borates, silicates, etc. (Qi 2018).List of different rare earth minerals are presented in Table 2.3.The average concentration of REEs in the earth's crust is found to be 150–220 ppm, which is much higher than the concentration of other …

Carbonatite and alkaline intrusive complexes, as well as their weathering products, are the primary sources of rare earth elements. A wide variety of other commodities have been exploited from carbonatites and alkaline igneous rocks including niobium, phosphate, titanium, vermiculite, barite, fluorite, copper, calcite, and zirconium.

Disseminated superficial actinic porokeratosis (DSAP) is a skin condition that causes dry, scaly patches. Symptoms include a large number of small, brownish patches with a distinctive border, found most commonly on sun-exposed areas of the skin (particularly the lower arms and legs).

This is supported herein by kinetic control of sulfidation selectivity between iron and rare-earth oxides (iron (III) oxide (Fe 2 O 3) and lanthanide (III) oxide (Ln 2 O 3 ), melting points 1,597 ...

The Dajishan deposit, located in the Nanling Range of southeastern China, is the largest wolframite deposit in the world. Approximately two-thirds of the tungsten resource is contained in large quartz-wolframite-K-feldspar-muscovite-scheelite-sulfide-(beryl) veins, but the remainder occurs as wolframite and lesser scheelite, disseminated …

The breccias are highly enriched in light (LREE) and heavy rare earth elements (HREE) (avg = approximately 5,000 ppm REE in hematite-rich rocks). Total LREE content and La/Lu ratios are correlated with hematite abundance; maximum La values (10,000 X chondrite) occur in hematite-quartz microbreccias from the geographic center …

The Bear Lodge Project area is a significant mineralized district that contains one of the largest disseminated rare earth deposits in North America. This deposit contains many of the less common, more valuable rare earths that are essential for the magnet materials used in electronics, fiber optics, laser systems for health and defense, and many evolving …

Included in this list are rare earth elements (REE), niobium, and zirconium. In 2021, the United States was reliant on imports of niobium and 90% reliant on imports of REE; in previous years the United States had been reliant on imports for both (U.S. Geological Survey, 2022b). Except for the Mountain Pass REE mine in southern ...

The Vathi porphyry Cu-Au±Mo deposit is located in the Kilkis ore district, northern Greece. Hydrothermally altered and mineralized samples of latite and quartz monzonite are enriched with numerous rare …

As rare earth metal prices fall, the low-cost beneficiation of their minerals has become essential. Flotation-magnetic (FM) separation is a newly-developed technology for the economic recovery of rare earth elements from the Dalucao ore. The FM process selectively agglomerates the rare earth particles while separating them from …

To achieve the rapid clean energy transition, there is an urgent need for the sustainable supply of energy-relevant critical minerals and rare earth elements. Valuable energy-critical metals such as platinum group metals (PGMs) and Ni occur in low concentrations in mafic and ultramafic ores with complex mineralogy.

A rare case of disseminated cutaneous histoplasmosis Indian J Dermatol Venereol Leprol. 2022 May-Jun;88(4):533-536. doi: 10.25259/IJDVL_1184_2021. Authors Sowmya Panuganti 1, Sirisha Varala 1, Sudha Vani Damarla 1, Jvds Prasad 1 Affiliation 1 Department of Dermatology ...

The 17 rare earth elements are: lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), scandium (Sc), and yttrium (Y). Scandium and yttrium are …

The Abu Ghalaga pluton in the southern eastern desert of Egypt (SED) consists of undeformed norite and hornblende gabbro intruding island arc metavolcanics, ophiolitic rocks, and syn-tectonic older granitic rocks. The Fe-Ti ore (mainly ilmenite) occurs in the form of lenses at the base of the norite. Based on microtextures, mineralogy, and …