I think you refer to the Chamois, a member of the goat-antelope family.Its hide produces a soft durable leather we call Shammy,and use it to clean hard shiny surfaces
A baby Antelope is called a Kid.A young antelope is called a calf
A group of antelope is called a herd.
A baby antelope.
Information on leather here http://www.sheepusa.org/index.phtml?page=site/text&nav_id=46946e41f586534a6568ce8e751bbfdf indicates it is rare and valued for softness but also that other leather is treated to resemble it. 'Leather Suede Skins' supply goods manufacturers with other sorts and may know a price http://www.leathersuedeskins.com/index02.html These seem to be antelope and comparison with similar products from other goods could give you a guide http://clothing-and-accessories.become.com/antelope-leather
These animals are found in many places, the state of Oregon has a breed of antelope and also Africa has antelope. A type of light weight leather can be made with the skins.Items like boots and moccasins can also be made.
ANTELOPE
Antelope meat is called Venison, as is Deer meat.
Pronghorn antelope are not actually antelope but can be found in Idaho. The pronghorn is it's own branch called antelocapridae.
Elands are the largest species of "antelope" what is the largest antelope
Goa
Calf
Most antelope offspring are called calves, or calf. But since deer are in the family their offspring are called fawns.