The geology of Boulby Mine

Woods, Peter J.

doi:10.2113/gsecongeo.74.2.409

Cited by 26 publications

(18 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Talbot et al (1982) have proposed that the sylvinite reached it's present position by flowing into the grey anhydrite shale and salt clay (also called a "carnallite marl", but at Boulby it contains neither carnallite nor carbonates, and consists of clay, halite and anhydrite) that lies on top of it. The most unique feature of the deposit is that the sylvinite "resembles a metamorphic gneiss, both in terms of crystal fabric and the fact that it contains many rounded fragments of rocks from adjacent beds" (Woods 1979). There are no bedding planes or layers of insolubles, and yet its basal contact with the lower Boulby Halite is fairly sharp, even, and nearly horizontal.…”

Section: England; the Zechstein Basinmentioning

confidence: 99%

“…The fluid mass of sylvinite presumably then circulated to form pillow-shaped structures similar to the underlying rock pattern caused by the fault system. The entrained shale, as well as the overlying formation is highly veined and filled with sylvinite, and the NaCl and KCI crystals of the sylvinite contain extensive amounts of high pressure dissolved gas (~80% N2; 20% CH4 ;Woods 1979; an analysis that might be expected after its original CO2 content had reacted with the CaCl2 brine). This gas may have been a decomposition product of the kerogen in the evaporites at those temperatures, or perhaps it came from another source, but it further indicates the presence of brine as the deposit was being altered, and it would have considerably contributed to the sylvinite's fluidity.…”

Section: M) Itmentioning

confidence: 99%

See 1 more Smart Citation

Potash Deposits

Garrett¹

1996

Potash

View full text Add to dashboard Cite

The number of potentially mineable and economically exploitable buried potash deposits is surprisingly large, and they are found scattered throughout the world. The "quality" of the deposits, however, varies widely in regard to their size (ore reserves), grade (mineable %K20), and economic factors such as their location and the cost of mining and processing. The later features include the depth to the ore, thickness and uniformity of the potash bed, its slope, the strength and integrity of the overlying strata (to form a strong roof), the danger of water intrusion (flooding) and the cost of penetrating aquifer zones with the shafts, problems with combustible gasses or "rock bursts", the amount of insolubles in the ore, the ease of "desliming", the KCl-NaCl liberation size, and the amount of magnesium chloride (carnallite) or magnesium sulfate (kieserite, etc.) impurities present. The location is very important with respect to the deposit's distance from the markets, the cost of transportation, Government royalties, taxes or fees, and possible special circumstances in selling the product (i.e., protective tariffs, local or controlled markets, reciprocal trade agreements, etc.). For the stateowned deposits there is often the over-riding desire to create jobs, reduce imports, and obtain foreign currency from exports. Also, there may be investment funds available at low interest rates or without the need for a normal return on the investment in order to promote a local industry.Because of the complexity of these factors and the large number of statecontrolled operations, normal economic considerations do not always control

show abstract

Section: England; the Zechstein Basinmentioning

confidence: 99%

Section: M) Itmentioning

confidence: 99%

Potash Deposits

Garrett¹

1996

Potash

View full text Add to dashboard Cite

show abstract

“…It is much deeper (1200 m) and as a consequence is hotter (40-42 "C). Deep burial has led to extensive mineralogical change, though there are areas in which little alteration has taken place (Woods, 1979). Small amounts of brine present in Boulby salt mine either originate from within the salt strata or are derived from water percolating from the Upper Bunter Sandstone.…”

Section: Introductionmentioning

confidence: 99%

Archaeal halophiles (halobacteria) from two British salt mines

Norton

McGenity

Grant

1993

Journal of General Microbiology

122

View full text Add to dashboard Cite

Samples were taken from the Winsford salt mine in Cheshire, England, which exploits bedded deposits from the Triassic Period (195-225 million years ago, MYA) and from Boulby potash mine in Cleveland, England, which is Permian (225-270 MYA) and is mined for the mineral sylvite (KC1). Halobacteria and obligately halophilic eubacteria were isolated from several different sample types. The halobacteria were characterized by chemotaxonomic methods and most but not all were shown to be very similar but not identical to those halobacterial types that dominate in highly concentrated surface brines. There was a high degree of similarity between the two mine populations, but some strains were particular to each mine.

show abstract

“…2, nearby at Aislaby [12] (Figure 2). The mine exploits marine evaporites of Upper Permian age (Zechstein) including thick beds of the potassium chloride sylvite [13,14]. The sylvite and halite from the Boulby mine were collected underground from stock piles accumulated from thick (>1 m) beds of relatively pure salt, rather than intergrowths of the two minerals.…”

Section: Methodsmentioning

confidence: 99%

Hydrogen from Radiolysis of Aqueous Fluid Inclusions during Diagenesis

Parnell

Blamey

2017

Minerals

View full text Add to dashboard Cite

A suite of Permian sylvite samples from Boulby potash mine, Yorkshire, UK, consistently yield traces of hydrogen upon analysis by a cold crush technique for liberating volatiles from entrapped fluid inclusions. In contrast, accompanying halite samples do not yield hydrogen. These data suggest the formation of hydrogen by radiolysis of water due to irradiation from potassium in the sylvite. The data indicate radiolysis as a mechanism for subsurface hydrogen generation, where it is available as an electron donor for a deep biosphere.

show abstract

The geology of Boulby Mine

Cited by 26 publications

References 0 publications

Potash Deposits

Potash Deposits

Archaeal halophiles (halobacteria) from two British salt mines

Hydrogen from Radiolysis of Aqueous Fluid Inclusions during Diagenesis

Contact Info

Product

Resources

About