- Asteroids (Atari 2600) online game (atarionline.org)
Asteroids for the Atari 2600 was a well-received adaptation of the popular arcade game. The game was developed and published by Atari in 1981, making it accessible to home console players. Although the graphics were simplified due to the hardware limitations of the Atari 2600, the gameplay remained mostly faithful to the original arcade version.
rockhounding site (unconfirmed)
- Jasper (Wikipedia)
Jasper, an aggregate of microgranular quartz and/or cryptocrystalline chalcedony and other mineral phases, is an opaque, impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to iron(III) inclusions. Jasper breaks with a smooth surface and is used for ornamentation or as a gemstone. It can be highly polished and is used for items such as vases, seals, and snuff boxes. The specific gravity of jasper is typically 2.5 to 2.9. Jaspillite is a banded-iron-formation rock that often has distinctive bands of jasper.