I've millions of points collected for lithology layer. They have used a coding for different types of rocks. I need to create a polygon around the extent of similar points. What is the easiest way to get the polygon rather than digitising manually. I was searching for tools that convert points to polygons but looks like there arent any. I've seen tools for converting line to polygons, polygons to lines and points but not for points to polygons. Your help in this regard is highly appreciated. Thank you.

I've millions of points collected for lithology layer. 

They have used a coding for different types of rocks. 

I need to create a polygon around the extent of similar points. 

What is the easiest way to get the polygon rather than digitising manually. 

I was searching for tools that convert points to polygons but looks like there arent any. 

I've seen tools for converting line to polygons, polygons to lines and points but not for points to polygons.

I've millions of points collected for lithology layer. They have used a coding for different types of rocks. Now How can I convert the Points of same rock into a polygon. I was trying to find a tool for converting similar points to a polygon such that it gives me the exact extent of the each rock type. need solution asap. Thank you. I use ArcMap 10.0. I tried using different tools but didnt had success. Thank you.

I've millions of points collected for lithology layer. They have used a coding for different types of rocks. I need to create a polygon around the extent of similar points. What is the easiest way to get the polygon rather than digitising manually. I was searching for tools that convert points to polygons but looks like there arent any. I've seen tools for converting line to polygons, polygons to lines and points but not for points to polygons. Your help in this regard is highly appreciated. Thank you.