Jaspery

The primary ores consist of pyrite, chalcopyrite, and other sulphides, with large amounts of jaspery quartz and some calcite and dolomite. ❋ Unknown (1915)

Celts or knives made of jasper and yellowish jaspery slate, which range from 2 to 5 inches in length, and are less than 1 inch in width and half an inch in thickness. ❋ William Henry Holmes (1889)

On the foiiner stream, at and even below the mouth of Madrigal Creek, the jaspery slates are seamed with dykes of all sizes from a mere thread up to many feet across; while the nearest exposure of the mass is near Gatare, eight miles further up the river. ❋ Unknown (1771)

From there, the heavy bedded sandstones of Nizao Arriba, and the jaspery slates extend to near Maniel. ❋ Unknown (1771)

I have traversed the entire width of the metamor - phic belt many times andwhile the main features are easily distinguishable have almost always arrived at different conclusions about the dips of the jaspery slates between Tablasas and Pomiel. ❋ Unknown (1771)

* I found one loose piece of gray jaspery slata in the bed of the Nigua, of which nearly. a fourth of the surface was made up of flesh - colored grains, apparently feldspar crystals, averaging over an eighth of an inch Across. ❋ Unknown (1771)

I collected numerous hand specimens here and elsewhere, in part green or blackish jaspery slate, the remainder syenite. ❋ Unknown (1771)

South of the limestone the same jaspery slates come in again with varying strikes from east and west to N. 35° W., and with all dips up to 80° south. ❋ Unknown (1771)

At Los Corales, southwest of San Jose, there is much slate, here altered to a coarse, semi-jaspery structure. ❋ Unknown (1771)

In some cases pieces of the wall rock are found inbedded in the syenite; and pebbles one-half syenite the other jaspery slate are not rare. ❋ Unknown (1771)

Beyond this western margin as on the eastern side of the mass, dykes run out into green and brown jaspery slates, making a perfect repetition of the condition of affairs on the Upper Ifigua and Jaina. ❋ Unknown (1771)

a still greater deposit of stratified gravel is displayed, a section at least six hundred feet thick resting on a red jaspery formation. ❋ John Muir (1876)

"Buenaventura '' tract, the elates are all highly jaspery and are here ienetrated in every direction by syenitic dykes of all sizes, often less than an inch in width and occasionally many feet. ❋ Unknown (1771)