Observed arrival · 2026-09-16

A Lexicon for the Southern Arizona Rock Collector

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A selective reference guide to the mineral, geology, desert, land-tenure, and lapidary terms used around Tucson.

Landing page captured for the 2026-09-16 issue.

Field notes

The lexicon organizes local collecting language across five overlapping fields, including mineralogy, desert geomorphology, land tenure, and lapidary work. Its entries do more than define specimens: “alluvium” is connected to the Tucson Basin’s washes, while “Basin and Range” explains the landscape that exposes varied rock near the city. The page is identified as Field Guide Series No. 4, revised 2026, and is intended to sit alongside related descriptive and regulatory papers.

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