'Ointment' in the Bible

Having said these things, he spat on the ground and made mud of the spittle, and put the mud, as ointment, on his eyes.

(It was that Mary which anointed the Lord with ointment, and wiped his feet with her hair, whose brother Lazarus was sick.)

Then took Mary a pound of ointment of spikenard, very costly, and anointed the feet of Jesus, and wiped his feet with her hair: and the house was filled with the odour of the ointment.

Why was not this ointment sold for three hundred pence, and given to the poor?