/r/Zeolites

Photograph via snooOG

A place for any and all things zeolite related, but with a strong focus on the collecting of them as mineral samples. Associated minerals are encouraged as well. e.g. apophyllite, gyrolite, prehnite, okenite, cavansite, etc

What is a zeolite?

According to mindat.org zeolites are: " A group name for a large number of framework alumosilicates (and, rarely, beryllosilicates, zincosilicates, beryllophosphates) which are built of corner-linked tetrahedra and contain exchangeable cations; several of these minerals have important technical applications. " This isn't very helpful to most people though. Zeolites are hard to describe otherwise though. The way I believe resonates best with people is the types of localities in which they usually form. Most zeolites that are large and/or attractive form in voids within volcanic rocks (usually basalt). These can range from cubes, to druzys, to sprays of needles. The are most often white or clear, occasionally pink or yellow, and rarely other colors. It is due to this vagueness that most people erroneously lump other minerals in with zeolites. This leads to our next section.

What minerals are commonly associated with zeolites and are they allowed?

To start, yes they are allowed, but with some caveats. The minerals allowed are, but not limited to: - Apophyllite- https://www.mindat.org/min-283.html - Calcite (when Zeolites are aslo present) - Cavansite - Chalcedony (when Zeolites are aslo present) - Gyrolite - Okenite - Pentagonite - Prehnite (when pseudomorphed after laumontite or another zeolite) - Any pseudomorph or epimorph of zeolite - Any mineral accompanied by a zeolite

Finally, what minerals are zeolites?

The most common zeolites are: - Analcime
- Chabazite- https://www.mindat.org/min-956.html - Erionite
- Heulandite
- Laumontite
- Levyne- https://www.mindat.org/min-2388.html - Mordenite
- Mesolite
- Natrolite
- Offretite
- Philipsite- https://www.mindat.org/min-3192.html - Scolecite
- Stilbite- https://www.mindat.org/min-3785.html - Thomsonite- https://www.mindat.org/min-28896.html

Other zeolites are: - Alflarsenite
- Amicite
- Ammonioleucite
- Barrerite
- Bellbergite
- Bikitaite
- Boggsite
- Brewsterite- https://www.mindat.org/min-766.html - Chiavennite
- Clinoptilolite
- Cowlesite
- Dachiardite- https://www.mindat.org/min-1212.html - Direnzoite - Edingtonite
- Epistilbite
- Faujasite
- Ferrierite
- Ferrochiavennite
- Flörkeite
- Garronite- https://www.mindat.org/min-46692.html - Gaultite
- Gismondine- https://www.mindat.org/min-10315.html - Gmelinite
- Gobbinsite
- Gonnardite
- Goosecreekite
- Gottardiite
- Harmotome
- Hsianghualite
- Kirchhoffite
- Lovdarite
- Maricopaite
- Martinandresite
- Mazzite- https://www.mindat.org/min-27548.html - Merlinoite
- Montesommaite
- Mutinaite
- Nabesite - Pahasapaite
- Paranatrolite
- Parthéite
- Paulingite- https://www.mindat.org/min-3132.html - Perlialite
- Pollucite
- Roggianite
- Stellerite
- Terranovaite
- Tschernichite
- Tschörtnerite
- Wairakite
- Weinebeneite
- Wenkite
- Willhendersonite
- Yugawaralite

/r/Zeolites

198 Subscribers

3

Okenite on Quartz from India

0 Comments
2024/10/09
15:55 UTC

2

Master's thesis on the application of zeolites in tissue engineering

Hi, I am currently working on my Master's thesis on the application of zeolites in tissue engineering. I was wondering if any of you had any experience in this field and if you could recommend any studies or literature that are not widely available to the public. Any information or advice would be greatly appreciated.

Additionally, I have encountered an issue while weighing zeolites on an analytical balance. I am aware that zeolites have a high affinity for absorbing moisture, but it seems they absorb it so quickly that it becomes very difficult to achieve an accurate measurement. Do you know what might be causing this problematic weighing? Have you perhaps encountered a similar issue, and do you have any suggestions on how to overcome it?

I would also like to mention that there were traces of a hygroscopic-like substance left on the balance, which I have since cleaned. Is it possible that some residue remains and is causing these issues?

3 Comments
2024/09/25
08:07 UTC

6

Small mesolite cluster, with small flakes of gyrolite attached to some needles. Sitting on analcime. Iceland.

0 Comments
2024/09/15
08:32 UTC

2

Radial erionite growth on apophyllite base, in basalt. Iceland.

0 Comments
2024/04/01
11:08 UTC

3

Heulandite with small epistilbite on chlorite, West Iceland. mm scale on bottom.

0 Comments
2023/10/01
08:50 UTC

4

Eriontie growing on light blue apophyllite and thompsonite. West Iceland.

0 Comments
2023/07/21
20:48 UTC

3

Erionite, found in western Iceland.

0 Comments
2023/07/18
23:03 UTC

4

Vein of Yugawaralite in hydrothermally altered basalt, Iceland.

0 Comments
2023/05/21
07:11 UTC

4

Scolecite on heulandite, Iceland.

0 Comments
2023/05/04
20:55 UTC

3

Stilbite cluster. Western Iceland.

0 Comments
2023/04/30
22:48 UTC

3

Cavity with epistilbite clusters, spherical calcites and quartz. Iceland.

0 Comments
2023/04/09
10:33 UTC

6

Zeolite vein with mostly epistilbite, some heulandite, and calcite. Iceland.

0 Comments
2023/04/09
10:27 UTC

5

Epistilbite, Breiðdalur eastern Iceland.

0 Comments
2022/06/01
20:30 UTC

3

Heulandite on quartz, Hvalfjörð, Iceland.

0 Comments
2022/05/22
13:45 UTC

4

Cavansite on Heulandite. Wagholi Qarry, Pune, Maharashtra, India.

2 Comments
2022/04/16
06:46 UTC

10

This sub is a bit sleepy it would seem but I would like to recommend this book for those out there that are considering getting into the world of Zeolites.

1 Comment
2021/10/11
13:23 UTC

3

Zeolite Molecular Sieve Market : Current Trends, Future Demand, Market Analysis & Outlook To 2022

The global Zeolite Molecular Sieve Market size is expected to value at USD 4.27 billion by 2022. The zeolite molecular sieve industry is subject to witness a substantial growth due to the rising demand for production of detergent and catalysts. Additionally, zeolite molecular sieve is increasingly utilized as an absorbent due to of its sieve-like structure. Zeolite molecular sieve are crucial for separation and adsorption in various manufacturing process for production of detergents.

Zeolite molecular sieve used as an absorbent, particularly in oil & gas sector and for water treatment. Rising demand for detergents due to increase in hygiene awareness among consumers is anticipated to boost demand for zeolite molecular sieve as a builder in liquid and powder detergents. Globally, the zeolite molecular sieve market is predicted to grow at CAGR of 2.3% in the forecast period, providing numerous opportunities for market players to invest for research and development in the market.

Download Sample Report @ Zeolite Molecular Sieve Market

Rapid expansion of oil & gas industry, particularly in the North America & South America region, and end-use demand for catalysts to provide higher yield are estimated to aggravate market growth over the next seven years. In addition, substantial increase in the number of water treatment activities for wastewater treatment and purification of water are propelling market demand for zeolite molecular sieve, in the recent years.

However, availability of various alternatives such as enzymes, metals and other chemical compounds and their relatively lower cost in comparison with zeolite molecular sieve are expected to limit market demand to a certain extent. Additionally, volatility in cost of raw materials is restraining market growth, in the last few years. Yet, introduction of silver infused sieves as an antimicrobial is expected to amplify market expansion in the near future.

Zeolites, which are micro-porous in nature and contains alumino-silicate minerals are commonly used as industrial adsorbents and catalysts. Zeolites are naturally found compounds. However, zeolites are manufactured for industrial use on a large scale. Industrially important zeolites are manufactured via various synthetic technique. Industrial zeolites are produced by heating aqueous solutions of alumina and silica with sodium hydroxide, while sodium aluminate and sodium silicate acts as a catalyst. Industrial application of zeolites include ion-exchange beds in residential and commercial water purification, softening, and other applications. Primary use of zeolites is in production of detergents.

The zeolite molecular sieve industry is broadly categorized into four major segments based on the application type such as detergents, catalysts, wastewater management and oil & gas industry. The detergents is considered as one of the fastest growing segment in the zeolite molecular sieve market with substantial revenue generation in the last few years. Growing popularity of zeolite molecular sieve in the detergents segment is attributed to the extensive use as binders. The oil & gas industry segment has also witnessed substantial growth owing to the increasing demand for absorbents.

The zeolite molecular sieve industry is divided by region as North America, Europe, Asia-Pacific, Latin America and Africa. North America has shown major growth in recent years owing to the rise in the implementation of latest techniques in detergents manufacturing sector, increase in the number of research & development activities in the region, expansion of oil & gas industry, and existence of well-established industrial infrastructure.

Asia-Pacific region is predicted to hold major market share in the zeolite molecular sieve market with massive growth in forecast period. Countries such as India, China and Singapore are leading the Asia-Pacific market with increasing adoption for production of lightweight construction material, growing use in production of asphalt concrete mix, and significant investment by leading industry players considering potential growth opportunities in the region.

The key players in the zeolite molecular sieve industry are Tosoh Co., Arkema, Inc., BASF SE, Honeywell UOP LLC, Grace Catalysts Technologies, Inc., Zeox Co., Chemiewerk Bad Köstritz GmbH, and Union Showa K K.

Market Segment:

Global Zeolite Molecular Sieve Application Outlook (Volume, Kilo Tons; Revenue, USD Million, 2012 - 2022)

• Detergents

• Catalysts

• Others

Global Zeolite Molecular Sieve Regional Outlook (Volume, Kilo Tons; Revenue, USD Million, 2012 - 2022)

• North America

• U.S.

• Europe

• Russia

• Turkey

• Latin America

• Brazil

• Asia Pacific

• China

• India

• MEA

• Qatar

Continued…

0 Comments
2021/08/12
04:52 UTC

3

Chalcedony and Apophyllite Geode with a single blade of Stilbite. India. Macro.

0 Comments
2021/04/13
22:26 UTC

1

Clinoptilolite Zeolite from Idaho / Oregon border

It's 97% pure clinoptilolite the rest is clay if I am not mistaken. These rocks were grounded down to 14-40 uploading a bigger rock they let me have later.

This was a shot from a lightbox product shot I made from a local zeolite supplier in Idaho.

Product courtesy of ida-ore zeolite in Idaho.

1 Comment
2021/02/26
15:15 UTC

3

Pink Heulandite with Stilbite. Aurangabad, Maharashtra, India.

0 Comments
2021/02/15
21:39 UTC

2

Where to Collect Apophyllite

Hello,

I was wondering if anyone knows what's the best place to find Apophyllite? I have found other types of minerals (such as Zeolites like Chabazite), but I have never found Apophyllite for myself. So, which is the best place that I should go to find them for myself?

0 Comments
2021/01/27
17:07 UTC

9

Pentagonite with Calcite. Wagholi Quarries, Wagholi, Pune District, Maharashtra, India.

0 Comments
2021/01/03
00:47 UTC

1

Faujasite Zeolites

I was wondering can anyone help me out. I am researching faujasite zeolites, specifically Y-zeolite. I'm looking for the surface area, acid properties and exchange ability of it but there seems to be basically no information online on such popular zeolites. I thought i could find at least the surface area in 1g of Y-zeolite as can be found of other zeolites like ZSM-5 but no research papers have given me the asnwers. Can anyone help?

1 Comment
2020/10/29
12:20 UTC

4

Stilbite on green chalcedony from Idaho

0 Comments
2020/10/01
02:42 UTC

6

Garronite-Ca in dolerite. Found in Hnappadal, Iceland

0 Comments
2020/07/28
19:09 UTC

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