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(a) Thenardite crystal under a thin section (crossed nicols) …

These natural mineral deposits are known to occur in California and New Mexico in the USA, and in Alberta, Canada (Last, 1989), ... thenardite, bloedite, glauberite, gypsum, and mirabilite and ...

Multitechnique characterization of secondary minerals near …

These secondary minerals, encompassing calcite, silica speleothems, gypsum, and thenardite, ... However, it has previously been reported in a lava tube in Mexico 16. The small peaks in the XRD ...

Salt damage and microclimate in the Postumius Tomb, …

The presence of gypsum, halite, and thenardite in the Postumius Tomb indicates the multicomponent nature of the solution, so that very marked increases of the gypsum solubility should not be expected. The little damage that is produced by gypsum is generated during the growth of gypsum crystals, and is less significant than that caused …

Thénardite: Mineral information, data and localities.

Formula: Na2SO4. Colour: Colourless, very light grey, light brown; colourless in transmitted light. Lustre: Vitreous, Resinous. Hardness: 2½ - 3. Specific Gravity: 2.664. Crystal …

Thenardite | Request PDF

Thenardite is a sodium sulfate salt (Na2SO4) usually found together with other sulfate salts such as mirabilite or Glauber's salt (Na2SO4·10H2O), glauberite (Na2Ca(SO4)2), bloedite or astrakanite ...

The introduction of traditional Chinese mineral medicine

In the above two medicines, there is one kind of mineral medicine–gypsum. The history of Chinese medicine in China is long and profound. Chinese medicinal materials are divided into three categories according to raw materials: Plants, minerals and animals.

Gypsum in Mexico

The fastest growing export markets for Gypsum of Mexico between 2021 and 2022 were Ecuador ($4.47M), Peru ($1.87M), and Costa Rica ($1.5M). Imports In 2022, Mexico imported $3.75M in Gypsum, becoming the 76th largest importer of Gypsum in the world. At the same year, Gypsum was the 1014th most imported product in Mexico.

Sedimentology, mineralogy, and geochemistry of the Late …

The evaporite minerals include calcite, gypsum, halite, glauberite, and thenardite, whereas clastic minerals are quartz and clay. ... Evaluation of two multi-dimensional discrimination diagrams from beach and deep sea sediments from the Gulf of Mexico and their application to Precambrian clastic sedimentary rocks. Int Geol Rev …

Precipitation of laumontite with quartz, thenardite, and gypsum …

Close mobile search navigation. Article navigation. Volume 29, Number 5

Developments in Soil Salinity Assessment, Modeling, Mapping…

In Southwest USA and Mexico, about 200 × 10 6 ha land is affected by salinity. In Spain, Portugal, Greece, and Italy, saltwater intrusion into aquifers is significant, and in Spain more than 20% of land area is desert or seriously degraded and nonproductive. ... and smaller ones on top of the discs. Gypsum, halite, aragonite, …

Anhydrite

In agriculture, anhydrite is a valuable source of calcium for soil treatment. It is superior to gypsum for two reasons: an equivalent mass of gypsum contains 21% less calcium because of its water content, and anhydrite is far more soluble in soils, providing quicker efficacy. Typical folded anhydrite from Bochnia salt mine, Poland. Photo: Lech ...

(PDF) Geochemistry of Evaporite Ores in an Earth-Scale …

Not exploited (4 mt) (Bowser et al., 1970) Thenardite, small deposit (1.2 mt) in upper member of Rodeo Fm. hosted in clay, shale, gypsum, and volcanic ash (Garrett, 2001) Mirabilite, halite. Four 'mineralized levels' (beds) containing multiple lenses (several meters long and up to 10 cm thick) associated with similar-sized lenses gypsum ...

Gypsum, mirabilite, and thenardite efflorescences of …

Gypsum, mirabilite, and thenardite eorescences of tu stone in the underground environment Luigi Germinario1,2 · Chiaki T. Oguchi2 Received: 26 September 2021 / Accepted: 11 March 2022

Drying of gypsum plaster prisms: prevention of visible …

In this work, we investigated the drying process of a hardened gypsum plaster model (GP) that showed sodium sulfate efflorescence after subsequent exposure to water. Visible efflorescence could be prevented by adding small amounts of calcium formate (CF). Prism samples were prepared to investigate this observation, with an emphasis on …

Cinnabar, hematite and gypsum presence in mural paintings …

Gypsum had not been reported before as part of the stucco composition in Teotihuacan. Abstract. In the color palette of mural paintings in the pre-Hispanic city of Teotihuacan, Mexico, the raw materials used to produce the diverse tonalities of red applied to the decoration of their main buildings has been associated with hematite, iron …

Gypsum, mirabilite, and thenardite efflorescences of tuff …

A number of underground sites of cultural or commercial significance was investigated in central Japan, where Oya stone appears extensively affected by efflorescence growth. The efflorescences are composed of mixed sulfates, including gypsum, mirabilite, and thenardite, whose development depends on the …

Gypsum, bassanite, and anhydrite at Gale crater, Mars

Analyses by the CheMin X-ray diffraction instrument on Mars Science Laboratory show that gypsum, bassanite, and anhydrite are common minerals at Gale crater. Warm conditions (∼6 to 30 °C) within CheMin drive gypsum dehydration to bassanite; measured surface temperatures and modeled temperature depth profiles …

Anhydrite and gypsum

Anhydrite (CaSO 4) and gypsum (CaSO 4 ·2H 2 O) are the two most abundant minerals of ancient marine evaporite deposits and are also common in non-marine evaporite deposits. Sedimentary gypsum forms by direct precipitation out of evaporating seawater under arid climatic conditions in hydrologically restricted marine …

Thenardite: Mineral information, data and localities.

ba80b41d-5522-48bf-be42-cd47b8bbadcc (as Thenardite) 5d563666-edae-4bdf-8daf-80465edbabc3 (as Thénardite)

New Mexico Mineral Symposium:Abstract

It forms chalky-white crusts that may fluoresce various shades of orange, yellow, or white; this luminescence is controlled by mechanisms that so far remain a mystery. Other fluorescent minerals of sedimentary or diagenetic origin reported from New Mexico include barite, gypsum, langbeinite, thenardite, and trona.

Thenardite after mirabilite deposits as a cool climate …

thenardite overlies a massive halite and decimeter-thick beds of glauberite. Thus, unlike the broadly distributed glauberite, the deposit of thenardite is restricted to a relatively small area in the central part of the basin (Ordóñez et al., 1991). Above the thenardite layer, there is a layer of mirabilite (several cm

Gypsum, mirabilite, and thenardite efflorescences of …

composed of thenardite and gypsum (Imogawa et al. 2000; Oguchi and Yuasa 2010; Seiki et al. 2017). Laboratory tests highlighted that salt weathering acts quite rapidly on Oya stone, leading to severe disintegration after few weathering cycles of salt attack with sodium sulfate; this appears related

World's Largest Gypsum Dunefield, world record in White …

White Sands National Park, New Mexico, United States--White Sands National Park, an American national park located in the state of New Mexico and completely surrounded by the White Sands Missile Range, covers 145,762 acres (227.8 sq mi; 589.9 km2) in the Tularosa Basin, including the southern 41% of a 275 sq mi (710 …

Experiments on mechanical properties of salt rocks under …

The UCSs of thenardite and gypsum are 16.3 and 14.6 MPa, respectively. The maximum strain at the peak strength of rock salt (halite) is much greater than those of the other three rocks. The elastic moduli of halite, thenardite, glauberite and gypsum are 3.0, 4.2, 5.1 and 6.8 GPa, respectively. Under cyclic loading, the peak strengths of the ...

Gypsum, mirabilite, and thenardite efflorescences of tuff …

Thenardite is a sodium sulfate salt (Na 2 SO 4) usually found together with other sulfate salts such as mirabilite or Glauber's salt (Na 2 SO 4 ·10H 2 O), glauberite …

Precipitation of Laumontite with Quartz, Thenardite, and Gypsum …

X-ray powder diffraction, scanning electron microscope (SEM), and electron microprobe analyses show thenardite to be the dominant phase in the exterior coatings, in association with minor microcrystalline (<50 μ m) laumontite and gypsum. Macrocrystalline (>1 mm) laumontite is the dominant phase in interior fracture coatings and is associated ...

The Mineral thenardite

It is similar to Mirabilite, a chemically similar mineral to Thenardite that, unlike Thenardite, contains water in its structure. Mirabilite is an unstable mineral, and will dehydrate and lose its water when exposed to air, thereby changing to Thenardite. These altered specimens are in fact Thenardite pseudomorphs after Mirabilite.

Evaporites through time: Tectonic, climatic and eustatic controls …

Little or no gypsum forms in pathway-I brines as all the Ca is consumed during the preceding alkaline earth carbonate stage. ... Mexico: Oligo–Mioc. 700 – Thenardite, lesser mirabilite, hosted in fine-grained, vitreous lacustrine tuff beds, beneath dissected alluvial fan conglomerate.

Glauberite: Properties and Occurrences

Glauberite is a monoclinic sodium calcium sulfate mineral with the formula Na 2 Ca(SO 4) 2.It is named for the salt that helps compose its chemistry called "Glauber's salt" after a German chemist. It forms in saline environments with other evaporite minerals such as halite, gypsum, calcite, and thenardite.

Gypsum Anhydrite Mining In New Mexico

Gypsum Anhydrite Mining In New Mexico Overview 3.32K Total Mines; Table 30 Total Mines; Browse 3,320 mining USGS records in new mexico. Most records highlight mining opportunities and activity in Dona Ana. Quick Facts. 3,320 records of mining in new mexico. 1,925 producers. 33 plants. 647 prospects.

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