Why is "Allophane" trending?
Latest news, Wikipedia summary, and trend analysis.
Trend Analysis
- Ranking position: #
- Date: 2026-03-25 10:18:11
This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
Based on Wikipedia pageviews and search interest, this topic gained significant attention on the selected date.
Trend Insight
This topic is not currently in the ranking.
Wikipedia Overview
Allophane is an amorphous to poorly crystalline hydrous aluminium silicate clay mineraloid. Its chemical formula is Al2O3·(SiO2)1.3-2·(2.5-3)H2O. Since it has short-range atomic order, it is a mineraloid, rather than a mineral, and can be identified by its distinctive infrared spectrum and its X-ray diffraction pattern. It was first described in 1816 in Gräfenthal, Thuringia, Germany. Allophane is a weathering or hydrothermal alteration product of volcanic glass and feldspars and sometimes has a composition similar to kaolinite but generally has a molar ratio of Al:Si = 2. It typically forms under mildly acidic to neutral pH (5–7). Its structure has been debated, but it is similar to clay minerals and is composed of curved alumina octahedral and silica tetrahedral layers. Transmission electron micrographs show that it is generally made up of aggregates of hollow spherules ~3–5 nm in diameter. Allophane can alter to form halloysite under resilicating aqueous conditions and can alter to form gibbsite under desilicating conditions. A copper-containing variety cupro-allophane has been reported.
Read more on Wikipedia →Related Topics
Trending Topic Today
Search Interest Perspective
-
Kinetic and isotherm studies of cr (VI) adsorption from aqueous media by using a synthetic chitosan-allophane nanocomposite - Nature
-
Glyphosate adsorption on synthetic allophanes and halloysite: Effects of pH and mineral properties - Wiley Online Library
-
Manure amendment increases the content of nanomineral allophane in an acid arable soil - Nature
-
Identification and Characterization of Nanoclays in Gamalama Volcanic Soil of Northern Maluku - Cambridge University Press & Assessment
-
Characterizing porous microaggregates and soil organic matter sequestered in allophanic paleosols on Holocene tephras using synchrotron-based X-ray microscopy and spectroscopy - Nature
-
Fractions, uptake and fixation capacity of phosphorus and potassium in three contrasting soil orders - SciELO Chile
-
New fert technology a 'game changer' - Rural News Group
-
Perspective of soil carbon sequestration in Chilean volcanic soils - Nature
-
Amorphous nanoparticles in clays, soils and marine sediments analyzed with a small angle X-ray scattering (SAXS) method - Nature
-
Enhanced removal of As (V) from aqueous solution using modified hydrous ferric oxide nanoparticles - Nature
Why This Topic Is Trending
This topic has recently gained attention due to increased public interest. Search activity and Wikipedia pageviews suggest growing global engagement.
Search Interest & Related Topics
Search interest data over the past 12 months indicates that this topic periodically attracts global attention. Sudden spikes often correlate with major news events, public statements, or geopolitical developments.