Stony Silence

• WWizards of the Coast2017-03-14
  Official Ruling
  Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keyword abilities, such as equip, are activated abilities and will have colons in their reminder text.
• WWizards of the Coast2017-03-14
  Official Ruling
  No abilities of artifacts can be activated, including mana abilities.
• WWizards of the Coast2017-03-14
  Official Ruling
  Stony Silence's ability affects only artifacts on the battlefield. Activated abilities that work in other zones (such as cycling) can still be activated. Triggered abilities (starting with "when," "whenever," or "at") are unaffected.

Rulings via Scryfall