Provenite

Palermo No. 1 Mine (North Groton)

MineRestricted accessDraft data

43.7300° N, 71.8340° W · ± 10 km

Beryl from New Hampshire, United States, with photos of specimens from this locality.

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Minerals found here

Beryl

Beryl at Palermo No. 1 Mine (North Groton)

Golden-yellow heliodor crystal about 3.2 cm across in albite matrix from the Palermo No. 1 mine, New Hampshire.
Golden-yellow heliodor crystal about 3.2 cm across in albite matrix from the Palermo No. 1 mine, New Hampshire.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
Be₃Al₂Si₆O₁₈
Morphology
Hexagonal prismatic crystals, often in albite matrix
Typical size
Crystals up to about 15 cm
Color / luster
Mostly pale; occasional gem blue or golden-yellow (heliodor) material
Associated minerals
Albitequartzschorlalmandinetriphyliteapatite
Availability
Scarce

Sources: SRC-720 SRC-721

About Beryl →

Geology of the locality

Setting
Lithium-bearing rare-element granitic pegmatite, mined for feldspar in the mid-20th century; noted for rare phosphate minerals
Region
New Hampshire
Country
United States

Approximate coordinates (North Groton area) from a rockhounding article; on private land, visits by permission only.

Sources: SRC-720

Sources

  1. SRC-720 · Website
    Gem hunting in New HampshireRockhounding.org · rockhounding.org
  2. SRC-721 · Website
    File:Beryl-267004.jpgRobert M. Lavinsky · Wikimedia Commons (dealer label)

Draft data from the Provenite workbook. Check entries against the cited sources before relying on them. Photos are open-licence images from Wikimedia Commons; the author and licence are given with each photo.