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Palygorskite
A sample of palygorskite
General
Category
Phyllosilicate
Formula (repeating unit)
(Mg,Al)2Si4O10(OH)·4(H2O)
IMA symbol
Plg[1]
Strunz classification
9.EE.20
Crystal system
Monoclinic
Crystal class
Prismatic (2/m) (same H-M symbol)
Space group
C2/m
Unit cell
a = 12.78 Å, b = 17.86 Å, c = 5.24 Å; β = 95.78°; Z = 4
Palygorskite or attapulgite is a magnesium aluminium phyllosilicate with the chemical formula (Mg,Al)2Si4O10(OH)·4(H2O) that occurs in a type of clay soil common to the Southeastern United States. It is one of the types of fuller's earth. Some smaller deposits of this mineral can be found in Mexico, where its use is tied to the manufacture of Maya blue in pre-Columbian times.
Palygorskite or attapulgite is a magnesium aluminium phyllosilicate with the chemical formula (Mg,Al)2Si4O10(OH)·4(H2O) that occurs in a type of clay soil...
from the leaves of anil (Indigofera suffruticosa) plants combined with palygorskite, a natural clay and type of fuller's earth which is most common in the...
palygorskite. There is a continuous variation in chemical composition from sepiolite, the most magnesic and trioctahedral endmember, to palygorskite,...
and actinolite. Short, fiber-like minerals include wollastonite and palygorskite. Biological fibers, also known as fibrous proteins or protein filaments...
Anil is commonly used as a source for indigo dye, and if mixed with Palygorskite clays, can produce Maya blue, a pigment used by the Mesoamerican civilizations...
infusing indigo dyes (particularly those derived from the anil shrub) into palygorskite, a clay that binds and stabilises the indigo such that it becomes resistant...
considerable chemical variation. Other 2:1 clay types exist such as palygorskite (also known as attapulgite) and sepiolite, clays with long water channels...
Asbestos-containing minerals known to form mountain leather include: actinolite, palygorskite, saponite, sepiolite, tremolite, and zeolite. Chrysotile Committee on...
known as Maya blue, obtained from the añil plant and the clay mineral palygorskite. The Aztecs were particularly noted for practicing human sacrifice on...
time can aid in its formation. Montmorillonite can then transform to palygorskite under dry conditions and to halloysite-10Å (endellite) in acidic conditions...
minerals in order of decreasing abundance are: illite, quartz, smectite, palygorskite, kaolinite, calcite, dolomite and feldspars. In Majorca a study finds...
a member of the palygorskite-sepiolite group, palygorskite subgroup. Subgroup members (formulae according to the IMA): palygorskite (Mg,Al)2Si4O10(OH)·4H2O...
37: 719–742. Francis, Michele Louise (2019). "Effect of sepiolite and palygorskite on plant available water in Arenosols of Namaqualand, South Africa"....
containing palagonite and plagioclase with additional clay, hyaloclastite and palygorskite; additionally it features biogenic limestone, carbonate sands, carbonate...
cycles of sedimentation, with the layers being separated by red bands of palygorskite, a clayey detrital deposit. Since December 2012, Jebel ech Chambi has...
wülfingite, anglesite, cerussite, hydrocerussite, litharge, fluorite, palygorskite and calcite. Sweetite is tetragonal, which means crystallographically...
zones small amounts of smectite and palygorskite accompany kaolinite. It is likely that smectite and palygorskite are products of pedogenic neoformation...
determine its authenticity, and identified the key ingredient of Maya blue, palygorskite. Tests under the sponsorship of INAH yielded additional radiocarbon dates...
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