Meningiomas can be cellular, fibrous or vascular. They are generally solid tumours that are totally encased with a tell-tale sign on an MRI called a dural tail. That's where the tumour links to the meningies which is the membrane surrounding the brain - hence the name meningioma. Symptoms can vary depending on size and location. Those nearer the top of the head near the skull are relative simple to remove but those deeper in the brain or in the skull base (that's around eye/ear level) are more tricky because they're generally near the brain stem (which sits between the spinal column and the brain) and from which a super highway of nerves and arteries lie.
Here's a good link that explains it and some different locations:
Facts about meningiomas:
http://www.brighamandwomens.org/neurosurgery/Meningioma/Meningiomafacts.aspx
What do you mean by consistancy? The texture of the cellular mass that it consists of, or the typical characteristics/pathology associated with this type of tumor? Following is a website that may be of help.
http://www.mayoclinic.com/health/meningioma/DS00901
I've had an extremely large meningioma removed from my brain, and depending on the location, it can really be nothing much and may not even require surgery.