MNP: Exploring the Southern Granite Mountains - Day 1

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Here's a delicate wide mouthed bottle which has turned a light pink color, indicating that it was produced when manganese dioxide was still used as a clarifying agent.  When such glass is exposed to sunlight it typically turns a pinkish to amethyst color.  This rough guide lets us know that this bottle was most likely produced in the early 1900's.

Here's a delicate wide mouthed bottle which has turned a light pink color, indicating that it was produced when manganese dioxide was still used as a clarifying agent. When such glass is exposed to sunlight it typically turns a pinkish to amethyst color. This rough guide lets us know that this bottle was most likely produced in the early 1900's.