( ( ( The color ) ( that results ) ) ( ( is ( referred ( to ( ( ( as ( ( the ( mineral 's ) ) streak ) ) , ) ( that ( is ( ( the color ) ( of ( ( a mineral ) ( in ( a ( powdered form ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN color)) (SBAR (WHNP (WDT that)) (S (VP (VBZ results))))) (VP (VBZ is) (VP (VBN referred) (PP (TO to) (NP (NP (RB as) (NP (DT the) (NN mineral) (POS 's)) (NN streak)) (, ,) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (NP (NP (DT the) (NN color)) (PP (IN of) (NP (NP (DT a) (NN mineral)) (PP (IN in) (NP (DT a) (JJ powdered) (NN form))))))))))))) (. .)))
The color  that results is referred to as the mineral's streak, that is the color of a mineral in a powdered form.
(ROOT (S (NP (NP (DT The) (NN color)) (PP (IN of) (NP (NP (DT the) (NN powder)) (PP (IN of) (NP (DT a) (NN mineral)))))) (VP (VBZ is) (VP (VBN called) (NP (NN streak)))) (. .)))