What is zeolite?

Zeolite is one of Earth's most fascinating minerals. Formed millions of years ago by volcanic eruptions, it was discovered in 1756 by the Swedish mineralogist Axel Fredrik Cronstedt. The type relevant to STEINKRAFT – clinoptilolite zeolite – was first scientifically described in 1923.

Today we know: its properties are unique in nature. No other mineral can simultaneously bind pollutants, release minerals, and act as a natural ion exchanger (= exchanges unwanted substances for beneficial minerals).

On this page, you'll find everything you want to know about zeolite – explained in an easy-to-understand way, with what science truly knows. 
We tell the full story of its origin here: The Long Journey of Zeolite - what you should know about zeolite

How is zeolite formed?

Imagine: Millions of years ago, a volcano erupts. Glowing lava – over 1,000 degrees hot – hits the sea. The water instantly evaporates. In the cooling lava, countless tiny gas inclusions are formed by this explosive contact – like bubbles in a sponge.

Over millions of years, seawater changes the chemical composition of this rock. Silicon (the second most abundant element on Earth after oxygen), aluminum, and oxygen combine to form a highly ordered crystal lattice structure (= regularly arranged network of atoms) with channels, pores, and cavities.

The result: zeolite.

The name comes from Greek – "zeo" means to boil, "lithos" means stone. The Swedish mineralogist Axel Fredrik Cronstedt gave the mineral this name in 1756 because it began to bubble when heated – the water escaped from its crystal structure.

Worldwide, there are over 40 naturally occurring types of zeolite. For applications in humans, animals, and soil, one of them is particularly relevant: Clinoptilolite Zeolite.

What makes zeolite so special – its sponge-like structure

Under the microscope, zeolite looks like a tiny sponge. Countless channels, pores, and cavities run through each individual particle.

What this means in numbers: a single gram of STEINKRAFT Zeolite has an internal surface area of several hundred m² – almost two tennis courts. On this enormous surface, zeolite can bind pollutants, bacteria, toxins (= poisonous substances), and excess acids.

This is why zeolite is so versatile – for skin, for soil, for animal health. Always the same mechanism: the porous structure that binds what doesn't belong and releases what is needed.

How does zeolite work?

Zeolite works in three ways simultaneously:

1. Adsorption (= accumulation of substances on the surface)

Pollutants, bacteria, fungi, heavy metals, ammonia (= pungent-smelling compound, formed during protein decomposition), and toxins attach to the enormous inner surface of the zeolite. They are held there and transported away during rinsing or excretion.

2. Ion exchange (= exchange of charged particles)

Zeolite exchanges unwanted ions (= positively or negatively charged particles) for beneficial mineral ions. In bathwater, this means: hard calcium ions are exchanged for softer potassium ions – the water becomes noticeably softer, the skin smoother. In soil: excess ammonium is bound, calcium and magnesium are released.

3. Remineralization (= returning minerals)

At the same time, zeolite releases valuable minerals such as silicon, calcium, potassium, and magnesium – to the skin, to the soil, to the digestive tract (= digestive canal). This strengthens from within.

Prof. Dr. med. Karl Hecht, neurophysiologist and professor emeritus at Charité Berlin, intensively researched zeolite. He emphasized throughout his life: "The skin is the body's largest detoxification organ. We should actively support its detoxification – and zeolite stimulates precisely this self-regulation of the skin." (paraphrased from lectures)

Clinoptilolite Zeolite – the most important type of zeolite

Not all zeolites are equally good. Of the over 40 natural types of zeolite (which are called chabazite, phillipsite, heulandite, etc.), clinoptilolite zeolite is the most thoroughly researched and relevant type for biological applications.

Clinoptilolite zeolite has:

• A particularly fine, highly ordered pore structure with channels of 0.4–0.7 nanometers (= billionths of a meter) in diameter
• A high silicon content – the main element for skin health, connective tissue, and bones
• Proven antimicrobial properties (= effective against bacteria and fungi)
• A strong affinity (= attraction) to heavy metals such as lead, cadmium, and mercury

Clinoptilolite deposits are found in Eastern Slovakia, Poland, Romania, Turkey, Ukraine, Norway, Cuba, and Iran. There are no clinoptilolite zeolite deposits in Germany, Austria, and Switzerland. If you see that stated anywhere – please question it. To be very precise: In Germany, Austria, and Switzerland, there are no commercially viable clinoptilolite deposits. Local occurrences exist but are not suitable for commercial use in terms of quality and quantity and are not mined anywhere.

What is zeolite used for?

Zeolite is one of nature's most versatile minerals. At STEINKRAFT, we use it for external applications:

For humans – externally: Face masks, detox baths, scrubs, mouthwashes, foot baths, wound care, hair care, natural deodorant. Zeolite binds pollutants, bacteria, and excess oil on the skin and mucous membranes.

→ All applications for humans →

 

For horses, dogs & cats: As a feed additive – EU approved as E568 for all animal species – zeolite supports gut health, binds mycotoxins (= fungal toxins in feed), and stabilizes the gut flora (= the balance of gut bacteria). Externally as a hoof or wound powder.

→ Zeolite for horses 
→ Zeolite for dogs
→ Zeolite for cats
→ Zeolite for cattle, pigs, sheep and goats

 

For soil & agriculture: Zeolite improves soil structure, stores nutrients and water, binds ammonium from slurry, and reduces leaching losses (= nutrients washed out of the soil by rain). A natural mineral that has been used in sustainable agriculture for decades.

→ Zeolite for agriculture 
→ Zeolite for the garden 
→ Zeolite in livestock farming

Why quality is crucial – and how to recognize good zeolite

Not all zeolite is equally good. There are big quality differences on the market – but they are often not visible. Here are the three most important criteria:

1. Origin & clinoptilolite content

A clinoptilolite zeolite needs at least 80% clinoptilolite content to be suitable as a feed additive for animals. Not all deposits deliver this content. The composition varies greatly depending on the mining location.

2. The grinding process – the decisive difference

Conventional ball mills (= mills with rotating metal balls) produce fine powder, but with metal abrasion. This means: impurities in the end product – iron, chromium, nickel – directly from the mill.

The magnet test: Put zeolite in a glass of water, stir, and hold a magnet to the glass from the outside. If a black cloud forms – metal contamination. You don't want that.

STEINKRAFT uses Air2Air Activation Technology – a tribomechanical process (= grinding by friction in an air stream), where zeolite particles collide with each other due to the airflow. No metal contact. No contamination. The crystal structure remains intact. 
You can read more about this in the article: Tribomechanical Activation

3. Grain size – check d50 value

Many products are advertised as "ultrafine". Always check the d50 value (= mean particle size at which 50% of the particles are smaller). A product with d50 = 95 µm is not ultrafine, even if it is advertised as such.

STEINKRAFT Zeolite, with experts for every application, has the suitable particle size – from 100 microns to 8 microns – that is truly fine. For external use on the skin, we recommend LIFEKRAFT Zeolite with an average size of 8 microns = µm.

Zeolite for every area – Human, Animal, Soil & Plant

Zeolite is one of nature's most versatile minerals. The basic principle remains the same everywhere – the application differs depending on the area:

What does science say about zeolite?

For decades, zeolite – especially clinoptilolite zeolite – has been studied in numerous scientific papers. Researchers have focused on its physical properties, its use in animal nutrition, agriculture, water purification, and technical applications.

The extraordinary crystal structure of the mineral is repeatedly at the center of attention. The fine pores and cavities enable zeolite to adsorb certain substances and exchange ions. These very properties make clinoptilolite interesting for many applications.

Numerous studies on animal nutrition are also available. Studies describe, among other things, the use of clinoptilolite as a feed additive for dogs, horses, cattle, poultry, and pigs.

For example, effects on stool quality, feed utilization, or the binding of certain undesirable substances in the digestive tract have been investigated.

In agriculture, zeolite has been researched for many years for soil improvement, water storage, and stable management. Here, too, numerous studies show interesting results that support the responsible use of this natural mineral.

At STEINKRAFT, we continuously follow new scientific findings and prepare them understandably for our customers. Because we are convinced: good decisions are made when nature, experience, and science are considered together.

You can find more information in our studies section with detailed summaries and sources. We will continue to expand this section. Here's a start for now >>

Conclusion – A fascinating gift of nature

Zeolite has accompanied humans for many decades and is now one of the most versatile natural minerals ever. Its special crystal structure makes it interesting for numerous applications – from animal nutrition to agriculture, soil improvement, and cosmetics.

But not all zeolite is the same. Origin, purity, clinoptilolite content, and processing significantly determine its quality. Therefore, it is worth taking a close look and paying attention to transparent information and verifiable quality standards.

At STEINKRAFT, we combine scientific findings with many years of practical experience and the conviction that natural solutions unfold their greatest value when used responsibly and with respect for people, animals, and the environment.

We invite you to further discover the fascinating world of zeolite – and to learn more about its properties, applications, and current research in our detailed knowledge articles.