Gypsum deposits in the world
Falling under the category of calcium-based building materials, gypsum is the fifth most abundant substance in nature. Gypsum is found in almost all parts of the world. As for Iran, it can be found in areas such as the central desert and around Tehran, Azerbaijan, Jajrood and around Mashhad. Being a sedimentary rock with a strong affinity, gypsum is therefore not found in pure form. It is mostly found in combination with lime, clay, carbon and iron oxides. (Gypsum in nature is mostly mixed with lime and clay). Like most other used stones, gypsum is extracted by hole blasting and explosion. In cases where the reserve is discovered at a mountain or hilltop and the gypsum layers are continuous along the horizon, extraction will be possible by continuous extraction machinery. Gypsum deposits are present in all continents. More specifically, large gypsum deposits exist in America, Asia and Australia. In Europe, gypsum mines are also extracted on the surface. In North America, gypsum mines are shallow, while there are gypsum deposits in the Utah deserts in the form of powders. The identified gypsum reserves in the world are estimated at more than 1.5 billion tons. The amount of gypsum reserves by country has been given in the table below.
Area | Volume of reserves (million tonnes) |
Iran | 900 |
Europe | 800 |
USA | 730 |
Canada | 450 |
Asia (excluding Iran) | 100 |
Mexico | 70 |
South America | 70 |
Africa | 70 |
APAC | 70 |
Other countries in Central America | 20 |
Total | 3300 |
According to the table, Iran accounts for 5% of world gypsum production, ranking second right after USA.
Gypsum reserves in Iran
Belonging to the Tertiary period, gypsum mines in Iran have sedimentary origin and are located on the earth’s surface. Iranian gypsum deposits come with different qualities and different geological conditions, found in almost all parts of the country, especially in central areas and around Tehran, Jajrood, Azerbaijan, around Mashhad and so on. Overall, there are more than 260 major gypsum mines around the country, from which about 16-17 million tons are extracted annually. The gypsum products are used for construction, cement production, medicine, food products, cosmetics, agriculture, paper industry, etc. The volume of extraction and utilization grows every year. The following table indicates the gypsum reserves across Iran.
Number of reserves |
Province |
Number of reserves |
Province |
7 |
Lorestan |
37 |
East Azerbaijan |
5 |
Mazandaran |
10 |
East Azerbaijan and Ardebil |
19 |
Markazi |
15 |
Isfahan |
14 |
Hormozgan |
31 |
Ilam |
6 |
Yazd |
8 |
Kermanshah |
5 |
Qazvin |
29 |
Bushehr |
11 |
Qom |
19 |
Tehran |
8 |
Kurdistan |
2 |
Chaharmahal and Bakhtiari |
22 |
Kerman |
27 |
Khorasan |
77 |
Kohgiluyeh and Boyer-Ahmad |
25 |
Khuzestan |
1 |
Golestan |
5 |
Zanjan |
90 |
Fars |
12 |
Semnan |
Highly energetic article, I liked that bit. Will there be a part 2?
Every weekend i used to visit this web page, because i
want enjoyment, for the reason that this this site conations actually
nice funny information too.
Can I just say what a aid to find somebody who really is aware of what theyre talking about on the internet. You positively know how you can bring an issue to mild and make it important. More individuals must learn this and perceive this aspect of the story. I cant believe youre not more well-liked because you positively have the gift.
I am typically to blogging and i really appreciate your content. The article has really peaks my interest. I am going to bookmark your website and preserve checking for new information.
There are some interesting cut-off dates on this article however I dont know if I see all of them center to heart. There may be some validity but I’ll take maintain opinion until I look into it further. Good article , thanks and we want extra! Added to FeedBurner as nicely
Spot on with this write-up, I actually assume this website wants rather more consideration. IL most likely be once more to read much more, thanks for that info.
you have got an awesome blog right here!
Good post. I study one thing more challenging on totally different blogs everyday. It is going to at all times be stimulating to learn content from other writers and practice somewhat one thing from their store. Thanks for sharing.
Hey, very good blog!
You actually make it appear really easy with your presentation however I in finding this topic to be really something.
It seems too complicated and extremely wide for me. I am having a look forward to your next submit, I’ll attempt to get the dangle of it!
My brother recommended I might like this website.
He was entirely right. This post truly made my day.
You can not imagine just how much time I had spent for this information! Thanks!
Howdy I am so grateful I found your web site, I
really found you, while I was looking on Yahoo for something else, Anyways I am here
now and would just like to say thanks a lot for a
remarkable post and a all round interesting blog (I also love the theme/design), I don’t have time to
go through it all at the moment but I have bookmarked it and also added
in your RSS feeds, so when I have time I will be back to read a lot more, Please do keep
up the fantastic work.
Many thanks!!!
I enjoy reading through a post that will make people think.
Also, many thanks for permitting me to comment!