Publication Details Author Barnes, V.E., Parkinson, G.A., Dawson, R.F. Publication Year 1939 Keywords Gray Granites County Llano, Blanco, Burnet, Mason, Gillespie Publication Code MC0012 Series Mineral Resource Circular Publisher Bureau of Economic Geology Geolocation: Get the Publication Free download: BEG-MC0012D.pdf Available to Purchase: Please select (Print Version) Preliminary report on gray granites from central Texas $2.00