There is a Mt Carmel Church Cemetery near Natchez, MS. Amite is near Natchez and you can take Liberty Road to get there from Natchez without getting on the highway much. Kingston road is located off hwy 61.
This is from
http://msgw.org/adams/retirement.htm#ret_cem[Note: Carmel Church and Cemetery are located about 1 or 2 miles from Ogden Rd off of Kingston Rd. The Church is on a hill, on the left of Carmel Rd. The area is cleared, but with large pecan, oak, and poplar trees in the yard. The cemetery is nestled down in the woods behind the church, and is overgrown.]
This old cemetery is located in the woods behind the Mt. Carmel Church, south of Natchez. To reach the cemetery from Natchez, take US 61 south to Kingston Rd. Take Kingston Road several miles to Carmel Church Rd. The church is on a hill to the left, less than a mile on Carmel Church Road.
The church was formed as a Presbyterian Church about 1829 by the SMITHS, GILLESPIES and OGDENS. It is now used by a Baptist congregation. (1996) Many of the graves have unreadable tombstones which are buried, badly broken, or missing.
A wrought iron fence surrounds one part of the cemetery; a wife fence surrounds another part. Some graves are outside of the fences.
Sarah Cook SMITH, wife of Rev. Jedadiah SMITH and mother of Calvin, Luther, Philander SMITH is supposed to be buried in this cemetery; however her headstone was not found. She died in 1800. Other family members are supposed to be buried here.
Also there is a Mount Carmel Church in Wilkinson County. Crosby is a town in Amite and Wilkinson counties, Mississippi. The location is near to 800-2198 Mount Carmel Rd, Crosby, MS 39633, coordinates 31.212771, -91.103674 . This location seems more likely the one you are looking for.
Google Maps:
https://www.google.com/maps/place/Mount+Carmel+Church/@31.21...Hope this helps a little.