It sounds like you're thinking of Glauconite.
Sort of a muddy greenish-purple-brown.
No, Purple without Blue is Red. And conversely, Purple without Red, is Blue.
Cardinal - An odd reddish pink. Carmine - A color similar to maroon. Carnelian - Your typical red color, maybe just a bit lighter. Cerise - This is more of a darkish pink. Cinnabar - A brownish red, named after a mineral of the same name. Crimson - A deep red, you should have known this one already. ORANGE COLORS: Coral - A pinkish color, but considered to be orange. Champagne - A very light orange, almost white. YELLOW COLORS: No colors in yellow that are not a color combination. GREEN COLORS: Celadon - This is a very light grayish green. BLUE COLORS: Cobalt - This is a blue color, with slight desaturation. It is named after the mineral cobalt, which has a gray tone. Cerulean - This is another shade of blue. It is just a shade grayer than the blue you get when highlighting something on an internet page. Cyan - it's a light blue/green color, and may describe any color in that spectrum. Chartreuse - This can refer to just about any color that is a greenish or yellowish shade. Used more commonly as yellow. Can also be an olive color - brownish green or brownish yellow. Creme - A tan color, but prettier. It is smooth looking.
blue
The difference between the rose period and the blue period is that the rose period started when Pablo found the love of his life, but the blue period started when his best friend died.
Marl glauconite Lalit Uchil
This mineral is called glauconite, an iron potassium silicate with very low weathering resistance.
Greenish-blue.
One is "turquoise" (a greenish blue, from the mineral, a hydrated copper-aluminum phosphate).
Turquoise is a greenish-blue mineral, whereas light blue is just blue diluted with white. Basically, turquoise is light blue with a bit of green added.
turquoise
The colour of the sea is greenish blue because of the reflection of the sky
Amber.
It is a rare mineral found only in California, colour from light to dark blue
Water appears greenish blue because its complimentary color red is absorbed by water molecules
teal is a four letter word for a greenish blue color ^_^
greenish blue