MORRIS TOWNSHIP, N.J. — Keystone Property Group and Mack-Cali, through a joint venture, has acquired 412 Mt. Kemble Avenue in Morris Township for $45.4 million. Located in Morris County’s corporate corridor, the asset comprises three three-story buildings offering 475,100 square feet of office space. The property offers a variety of tenant amenities, including a fitness center, café, executive parking garage and dual power feeds. Earlier this year, the companies entered into agreements to form various joint ventures to acquire the property as part of a larger portfolio of office properties that Mack-Cali owns throughout Northern New Jersey, New York and Connecticut.