- Sterling Hill
- Sussex County
- New Jersey
- 4.2 by 3.3 by 1.6 cm – Miniature specimen (fits into a 5 cm cube)
Holdenite is a rare manganese zinc arsenate silicate mineral named after wealthy collector Albert F. Holden (1866-1913), who donated his collection and estate which established a large endowment at the Harvard Mineralogical Museum for specimen acquisitions (Palache & Shannon, 1927). Later study by Moore & Araki (1977) established the currently accepted formula. Holdenite here forms fine granular pink-purple masses on willemite-franklinite ore. Holdenite is an extreme rarity unique to Franklin-Sterling Hill.
This specimen comes from the Bob Trimingham collection, a collector from Livermore, California. His detailed collection card indicates purchase from Nature's Treasures (Dwight Weber) in 1978.
Item code: MS0931
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