The Black-Slate Edict of Punakha Dzong

2019 ◽  
Author(s):  
Rinzin Wangdi ◽  
Michaela Windischgraetz
Keyword(s):  
Black Slate

Inlaid natural stones in Makrana Marble Taj Mausoleum of India

2020 ◽  
Author(s):  
Gurmeet Kaur
Keyword(s):  
White Marble ◽  
Red Sandstone ◽  
Natural Stones ◽  
Taj Mahal ◽  
Black Slate ◽  
Lapis Lazuli

<p>Taj Mahal, the iconic mausoleum, known for finest quality white Makrana Marble from Rajasthan, is inlaid with numerous natural stones which add to the beauty of this architectural wonder from India. Makrana marble has been recently designated as a Global Heritage Stone Resource (GHSR) by IUGS. Makrana marble is the first GHSR from India and in fact the first from the whole of Asia to join the list of 22 designated GHSR’s from around the globe.</p><p>The Taj mausoleum is part of the Taj Mahal complex which has numerous edifices built in marble and red sandstone. The white Makrana Marble mausoleum is placed in the center of the northern periphery of the Complex. The main mausoleum is a magnificent octagonal edifice with its arched doorways, walls, floor adorned with intricate inlaid work in semi-precious natural stones and rocks that add an aesthetic dimension to this otherwise white marble edifice. The natural stones adorning the various components of the marble edifice include Yellow Jaisalmer Limestone, black slate, carnelian, agate, Khatu Rainbow Sandstone, onyx, lapis lazuli, malachite, jade, mother pearl, etc. The inlaid natural stones of Taj Mausoleum were procured from far off places during the Mughal rule in India.</p>

Vanadium-Bearing Margarite from the Lachlan Fold Belt, New South Wales, Australia

1988 ◽  
Vol 52 (366) ◽  
pp. 341-345 ◽  
Author(s):  
V. J. Morand
Keyword(s):  
Solid Solution ◽  
Local Reaction ◽  
New South ◽  
New South Wales ◽  
Contact Aureole ◽  
Fold Belt ◽  
Metamorphic Mineral ◽  
South Wales ◽  
Lachlan Fold Belt ◽  
Black Slate

AbstractMargarite occurs in Ordovician black slate within the contact aureole of the Wyangala Batholith, in the Lachlan Fold Belt in New South Wales. This occurrence is the first described from New South Wales. It is a regional metamorphic mineral replacing chiastolitic andalusite, and contains up to 1.07% V2O3 and up to 0.37% Cr2O3. Vanadium and chromium here substitute for octahedral aluminium. Margarite is produced by a local reaction in which Ca and H2O are introduced into andalusite grains. There is a significant paragonite component in the margarite but negligible muscovite solid solution.

scholarly journals Pyro-expanded black slate in sculptural art

Cerâmica ◽  
2013 ◽  
Vol 59 (349) ◽  
pp. 134-140
Author(s):  
J. C. e Costa ◽  
T. Almeida ◽  
C. S. F. Gomes
Keyword(s):  
Organic Matter ◽  
Firing Rate ◽  
Black Shale ◽  
Functional Relationship ◽  
Regional Metamorphism ◽  
Science Research ◽  
Low Grade ◽  
New Techniques ◽  
Fine Grained ◽  
Black Slate

Black slate transformed through a pyroplastic process named pyro-expansion or exfoliation has been explored in the present work in order to be used as sculptural material. Black slate is a highly fissile, fine grained and organic matter rich rock that is the product of the action of low-grade regional metamorphism on black shale (a sedimentary clay and organic matter rich, also fissile and fine grained rock). Black slate if fired at an adequate firing rate up to the temperature range 1000 ºC-1240 ºC shows great potential for the manufacture of sculptural pieces. The technical possibilities of the shaping or conformation of pyro-expanded black slate have also been studied, including the reactions that take place when two different black slate pieces are closely associated with each other, or when black slate pieces are closely associated to other materials, such as metals and ceramics. These interactions, while associating different materials that react with each other, emphasize the unique characteristics of new sculptural compositions increasing the plastic capacities of the pyro-expanded black slate. Some examples of the associations referred to will be shown, which highlight the close functional relationship between art and science; research involves the approach to new techniques and materials, looking at the development of unique plastic configurations.

scholarly journals Organic acids, siderophores, enzymes and mechanical pressure for black slate bioweathering with the basidiomycete Schizophyllum commune

2020 ◽  
Vol 22 (4) ◽  
pp. 1535-1546 ◽  
Author(s):  
Julia Kirtzel ◽  
Nico Ueberschaar ◽  
Tanja Deckert‐Gaudig ◽  
Katrin Krause ◽  
Volker Deckert ◽  
...  
Keyword(s):  
Organic Acids ◽  
Schizophyllum Commune ◽  
Mechanical Pressure ◽  
Black Slate

Geochemistry and uranium mineralogy of the black slate in the Okcheon Metamorphic Belt, South Korea

2015 ◽  
Vol 49 (4) ◽  
pp. 443-452 ◽  
Author(s):  
YoungJae Kim ◽  
Jieun Seo ◽  
Sue-A Kang ◽  
Seon-Gyu Choi ◽  
Young Jae Lee
Keyword(s):  
South Korea ◽  
Metamorphic Belt ◽  
Black Slate

scholarly journals Enzymatic Bioweathering and Metal Mobilization From Black Slate by the Basidiomycete Schizophyllum commune

2018 ◽  
Vol 9 ◽  
Author(s):  
Julia Kirtzel ◽  
Soumya Madhavan ◽  
Natalie Wielsch ◽  
Alexander Blinne ◽  
Yvonne Hupfer ◽  
...  
Keyword(s):  
Schizophyllum Commune ◽  
Metal Mobilization ◽  
Black Slate

scholarly journals Microbiomes in an acidic rock–water cave system

2019 ◽  
Vol 366 (13) ◽  
Author(s):  
Katja Burow ◽  
Anja Grawunder ◽  
Marie Harpke ◽  
Sebastian Pietschmann ◽  
Ralf Ehrhardt ◽  
...  
Keyword(s):  
Pyrite Oxidation ◽  
Low Ph ◽  
Rock Material ◽  
Seepage Water ◽  
Low Grade ◽  
Cave System ◽  
Acidic Rock ◽  
Phosphate Mobilization ◽  
High Concentrations ◽  
Black Slate

ABSTRACT Belowground ecosystems are accessible by mining, where a specific microbial community can be discovered. The biodiversity of a former alum mine rich in carbon, but with a low pH of 2.6–3.7, was evaluated by DNA- and cultivation-dependent methods using samples of the black slate rock material, secondary mineralization phases and seepage water. Pyrite oxidation within the low-grade metamorphic Silurian black slate established high concentrations of Fe and $\rm{SO}_4^{2-}$ forming the extreme conditions visible with acidophilic and Fe-oxidizing microorganisms. In addition, an unexpected predominance of fungi in this C-rich and acidic cave ecosystem, including high numbers of Mucoromycota and Mortierellomycota, was detected. Therefore, fungal cultures were obtained, mainly from the secondary mineral phases that are iron phosphates. Hence, the fungi might well have been involved in phosphate mobilization there. The rock material itself is rich in organic carbon that can be used by oxidase activity. The cultivation setup mimicked the cave conditions (low temperature, low pH, oxic conditions), with one oligotrophic and one medium rich in nutrients that allowed for isolation of different fungal (and eutrophic bacterial) groups. The acidic conditions prevented the occurrence of many basidiomycetes, while the isolated fungi could survive these adverse conditions.

Variable effects of plant colonization on black slate uptake into microbial PLFAs

2013 ◽  
Vol 106 ◽  
pp. 391-403 ◽  
Author(s):  
Anne-Gret Seifert ◽  
Susan Trumbore ◽  
Xiaomei Xu ◽  
Dachung Zhang ◽  
Gerd Gleixner
Keyword(s):  
Plant Colonization ◽  
Black Slate ◽  
Microbial Plfas

Goldmanite from the black slates of the Ogcheon belt, Korea

1999 ◽  
Vol 63 (2) ◽  
pp. 253-256 ◽  
Author(s):  
G. Y. Jeong ◽  
Y. H. Kim
Keyword(s):  
Cell Dimension ◽  
X Ray Diffraction ◽  
X Ray ◽  
Fine Grained ◽  
Black Slate

AbstractGoldmanite, the vanadium analogue of grossular and andradite, was found as subrounded green porphyroblasts ranging from 0.1 to 1.7 mm in size in the carbonaceous black slates from the Deokpyeong area of the Ogcheon belt in Korea. A radiating aggregate of slightly curved blades of goldmanite crystals displays birefringence and replaces the fine-grained black matrix. The V2O3 content ranges from 21.9 to 26.6 wt.% (24.0 wt.% average), higher than previously reported values. The calculated mole % of the goldmanite end-member ranges from 72 to 91. Its cell dimension was calculated to be 12.04 Å from X-ray diffraction. The black slate in the Deokpyeong area is the richest known accessible source of relatively pure goldmanite.

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