Minerals are identified by a number of characteristics. Hardness, crystal shape, clevage, color, etc.
Unfortunately, color is the least reliable as many minerals have colors similar or the same as others.
Clevage and crystal shape can be seen in hand specimens in person, but can sometimes be hard to see in photos.
If you have any minerals you were wondering about, I'd be happy to take a crack at identifying them. I'll give it my best shot, but sometimes however its just not possible from a photo.
So if you want to post a mineral, give me the best picture or pictures that you can, close but not blurry (cell phones are notorious for producing blurry close ups).
Here is one I think you all can identify: