The Organ Pipes National Park is enclosed in two Cities: Hume to the north of Jacksons Creek, and Brimbank to the south. It is not known which side of the creek this specimen was collected from. Acquired by Joan Lamond in 1997 from Rob Hamson. Collected by Prof. R.A. Willis 11/1/1974. Width of view 3mm. Stack of 25 images (chabazite) and 31 images (thomsonite).
