Leonardite. Leonardite is a soft waxy, black or brown, shiny, vitreous mineraloid that is easily soluble in alkaline solutions. It is an oxidation product of lignite, associated with near-surface mining. [1]

Jul 14, 2019 · The Differences Between Leonardite and Humalite. Leonardite ranges considerably in humic and fulvic acid content. For example, deposits can have as low as 10% humic acid content and as high as 78%. It’s derived from Lignite based coal and was formed in …

Leonardite Products mines and processes leonardite, a natural form of humates. The geography in Northwestern North Dakota holds unique leonardite deposits. Once dried and sized, leonardite is useful to several industries.

As a fertilizer additive, leonardite improves a crop’s ability to absorb nutrients, resulting in faster growth, healthier plants and higher yields. Commonly used as a soil amendment, humates add organic matter to marginal soils improving texture, moisture holding capacity and pH stability.

Jul 28, 2023 · While the two contain humic acid, Leonardite is a shell term used to describe humic products originating from lignite coal in saltwater deposits. These deposits can range anywhere between 10-78 per cent humic acid using the coulometric method, with varying levels of unwanted ash and heavy metals.

Feb 16, 2024 · Black Humic, leonardite obtained exclusively as a by-product of mining activities, is a liquid soil conditioner containing a good supply of humic acids and fulvic acids, with an acidic pH (5.4) and allowed for use in organic farming. It produced many activities in …

Apr 16, 2016 · Leonardite from various deposits in Thailand was examined as a potential NOM for soil improvement. Chemical compositions of leonardite varied from deposit to deposit. Leonardite from Lee mine...

HSs are major components of the natural organic matter (NOM) in soil and water as well as in geological organic deposits such as lake sediments, peats, brown coals, and leonardite. According to the operational definition of IHSS, HSs can be divided into four fractions of …

Apr 6, 2021 · Leonardite is a soft, earthy, medium-brown, coallike substance associated with virtually all lignitic outcrops in North Dakota, and it is mined commercially from the Harmon bed in Bowman County.