Rare Earth Element Deposits in Mongolia
Round 1
Reviewer 1 Report
Dear Editor,
I have completed my review of the paper entitled “Rare Earth Element Deposits in Mongolia”. Two types of Rare Earth Element Deposits in Mongolia are systematically introduced in this paper.
It is my opinion that this manuscript has potential to become a good paper and would be of interest to similar research in related fields. What is lacking currently is the model for the ore-forming process needed to be added.
Regards,
Author Response
“What is lacking currently is the model for the ore-forming process needed to be added”
The origin of carbonatites and their rare metal mineralization is controversial. As this is a review paper, we have added a sentence about it to the conclusions.
“However, the origin of carbonatites and their REE mineralization is still controversial (e.g., 10, 11, 12, 14)”.
Reviewer 2 Report
The paper authored by Jaroslav Dostal and Ochir Gerel entitled " Rare Earth Element Deposits in Mongolia " reports an information on REE mineral deposits in Mongolia. The paper has logical structure and the results are well-presented in the accompanying figures. However, the paper has shortcomings. Since this work is a compilation (review), it must contain all the main published papers concerning the presented deposits.
For example, Section 4.1.1 Mushgai Khudag looks like your description and the result of your investigations. In my opinion, you need to write “The detailed geology, petrology and mineralogy of the Mushgai Khudag carbonatite complex have been investigated by ……..”.
This remark applies to other sections as well.
Line 221 Feng proposed a two-stage process of liquid immiscibility for Ulgii Khiid, not for Mushgai Khudag. Andreeva, 2000; Andreeva et al., 1998; Andreeva and Kovalenko, 2003 proposed salt-silicate liquid immiscibility at a temperature above 1200 °C using melt inclusions data. I didn’t find these references in your paper.
Lines 222-223 Reference?
Line 14 carbonatite-hosted? Or syenite-hosted?
Lines 476-477 Melanephelinite is not a syenite volcanic equivalent
Author Response
Reviewer#2
- “It must contain all the main published papers concerning the presented deposits”.
We have added a recent reference, which lists numerous papers describing various aspects of the REE deposits in Mongolia. In this publication, there is an exhausting list of papers spanning more than 50 years of investigations particularly by Russian scientists. This approach is done in a large majority of the review papers such as ours.
“Gerel et al. [55] lists numerous publications describing various aspects of the REE deposits in Mongolia”.
- Lines 221-223. Feng proposed a two-stage process of liquid immiscibility for Ulgii Khiid, not for Mushgai Khudag.Andreeva 2000……Lines 222-223 References?
Lines 221-223 deleted
3. Line 14. clarified; sentence modified.
4. Lines 476-477. The sentence modified.
