These shadows are not chalky or powdery, and most are decently pigmented. Some are more buttery than others, but they all perform better over a primer.
Swatches without primer
I swatched these both without and with primer (Urban Decay primer Potion), so you can see the difference it makes.
Far left row--top: shimmery reddish brown - soft, good pigmentation
middle: shimmery orangey copper - soft, excellent pigmentation
bottom: matte brownish black - a little stiff and slightly sheer
Middle row--top: bright pinky purple - soft, decent pigmentation
middle: glittery forest green - kind of sheer (much better with primer)
bottom: shimmery pink pearl - sheer
Far right row--top: glittery navy blue - kind of sheer (much better with primer)
medium: white with gold iridescence - soft
bottom: antique warm gold - a little sheer
|without primer (natural light)|
|with primer (natural light)|
NYX Love in Paris palettes (9 color palettes) retail for $10 (USD).