The word(s) "mountains" appears 15 time(s) in 15 verse(s) in Quran in Muhammad Pickthal translation.

(1) Lo! (the mountains) As-Safa and Al-Marwah are among the indications of Allah. It is therefore no sin for him who is on pilgrimage to the House (of Allah) or visiteth it, to go around them (as the pagan custom is). And he who doeth good of his own accord, (for him) lo! Allah is Responsive, Aware.

(2) And remember how He made you viceroys after A'ad and gave you station in the earth. Ye choose castles in the plains and hew the mountains into dwellings. So remember (all) the bounties of Allah and do not evil, making mischief in the earth.

(3) And it sailed with them amid waves like mountains, and Noah cried unto his son - and he was standing aloof - O my son! Come ride with us, and be not with the disbelievers.

(4) Had it been possible for a Lecture to cause the mountains to move, or the earth to be torn asunder, or the dead to speak, (this Qur'an would have done so). Nay, but Allah's is the whole command. Do not those who believe know that, had Allah willed, He could have guided all mankind? As for those who disbelieve, disaster ceaseth not to strike them because of what they do, or it dwelleth near their home until the threat of Allah come to pass. Lo! Allah faileth not to keep the tryst.

(5) Verily they have plotted their plot, and their plot is with Allah, though their plot were one whereby the mountains should be moved.

(6) And Allah hath given you, of that which He hath created, shelter from the sun; and hath given you places of refuge in the mountains, and hath given you coats to ward off the heat from you, and coats (of armour) to save you from your own foolhardiness. Thus doth He perfect His favour unto you, in order that ye may surrender (unto Him).

(7) Till, when he came between the two mountains, he found upon their hither side a folk that scarce could understand a saying.

(8) Whereby almost the heavens are torn, and the earth is split asunder and the mountains fall in ruins,

(9) They will ask thee of the mountains (on that day). Say: My Lord will break them into scattered dust.

(10) Hast thou not seen how Allah wafteth the clouds, then gathereth them, then maketh them layers, and thou seest the rain come forth from between them; He sendeth down from the heaven mountains wherein is hail, and smiteth therewith whom He will, and averteth it from whom He will. The flashing of His lightning all but snatcheth away the sight.