THE ADIRONDACK GRAPHITE DEPOSITS 



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igneous amphibolites (orthoamphibolites) are of the same age. 

 Cushing believes that some are certainly older than the Laurentian 

 granite. That may be the case with the metagabbro on Bear Pond 



mountain. 



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The other igneous rock is the pink Algoman granite. A single 

 knob is exposed on the south road. This has injected the syntectk 

 Swede Pond gneiss in " lit-par-lit " fashion. Consequently the re- 

 sulting rock is a double injected syntectic — the Grenville quartzite 



