the hard, solid, nonmetallic mineral matter of which varieties of Jasper rock are composed, esp. as artifact material.
One Great One.One Spirit.One Good Medicine.One People.Preserving ancestry of one is preserving ancestry of all- An exploration on Brown, Red, Yellow, Green, and Micro-crystal quartz in Jasper.
From a perspective tertiary to the world of Jasper and – varieties, vareigations, colors, and the many composites artifact hunters find- The stone itself is actually an impure Silica, and a form of Chalcedony. Current articles with very accurate and well known descriptions can be found in more well known and now fairly common centers of information such as as Wikipedia. I have always thought one description found there, a wax luster, really is a great way to describe a raw facet of this type of stone. Most colors of Jasper and the more well known resulting patterns are formed from various inclusions of other minerals, sediment, and ores during various stages of it’s forming.Check below for some general definitions of some terms used above.
I have found in order of rarity a basic dispersal of five variations of color and general composite minerals when considering Pennsylvania Jasper. Variations of brown from dark to Beige in appearance are fairly commonly found. Orange and Amber colored Jasper through variations nearing Deep red are found in less abundance, And the spectrum of red following proves to be somewhat more rare depending on Hue and Lightness. Most collectors agree that darker red Lithics may not be discovered as frequently and aside from commonality in the brown, the predominance of any red colors in their artifacts often came from a fire hardening process where the more common shades of Brown could be strengthened anyway. This process often would result in a fire hardened, sometimes dark to bright red discoloration
Mustard to brighter Yellow Jasper are arguably more rare than the previous. Often lithics may predominate in a lighter variety of brown with some yellow veins, spots, or variegations but inherently remain a specimen of brown Jasper. Beyond this the variations of color become what I like to think of as exotic. Varieties of green Jasper discovered suggest the presence of green hued minerals -Possibly chlorite or similar. I have sites and specimens where this green Jasper can be found in varieties of slabbed, blank forms. Some of these inclusions very clearly show large sections of purple, violet, and deep blues. And yet other colors such as varieties of white and grays more often found mixed with varieties of red Jasper or simply pure in that spectrum of Hue can be found. Finally and this would of course not constitute a color per se, But variations of micro-crystal silica quartz in Jasper, often running through the stone in veins, denderitical formations, or outcroppings of geode-like crystal formations on, near or surrounding the Jasper exist.What I have always appreciated about Pennsylvania Jasper is the purity of the Jasper.
Coming back around full circle to the first mention of it’s nature.And so breaking out from this tertiary perspective of Silica Quartz, SiO2 We can now consider the purity of mineral inclusions in the Jasper as a measure of high quality Jasper specimens. And aside from photos and artifact shows there is little way to appreciate just how pure PA Jasper is without having it in your hands. Never the less, as we attempt to do in this blog, We can try! Although many popular names of Jasper around the US are world renowned for some of the beautiful lithics produced /found, Very few contain the purity found here. And in various ways but of course through color, luster, and ultimately chemical analysis, It can be proven. The next time you’re looking at a claimed sample of high quality Jasper, online or offline, consider these things and understandably you will know.
(variegation) variability in coloration