Willemite is a zinc silicate mineral (Zn 2 Si O 4) and a minor ore of zinc. It is highly fluorescent (green) under shortwave ultraviolet light. It occurs in a variety of colors in daylight, in fibrous masses and apple-green gemmy masses.

2023年9月7日 · Willemite is a mineral with the chemical formula Zn2SiO4. It is a zinc silicate and is known for its unique fluorescence properties, making it a fascinating material both in the field of mineralogy and as a fluorescent collector’s gem.

The Franklin-Sterling Hill orebodies are unique in the context of massive willemite as a primary ore mineral, derived from an unknown proto-ore during Cambrian, or older, times.

2022年3月28日 · Meet willemite (Zn 2 SiO 4), a zinc silicate mineral that responds to ultraviolet excitation so well that it will sometimes glow for over a dozen hours. Another odd property of willemite is visible when you strike a massive chunk with a hammer.

Willemite is one of the most well-known fluorescent minerals, and its fame is attributed to the Franklin District of New Jersey where it forms in abundance with many different colors and habits.

2019年8月30日 · Willemite is a zinc silicate mineral that can be found as crystals, fibers, or grains. This brittle, yet somewhat hard, mineral is widely known for its ability to fluoresce. Willemite gained its popularity due to its abundance in the Franklin District of New Jersey, USA.

2023年5月6日 · Uncover the secrets behind willemite’s glow as we explore this fluorescent beauty’s properties, history, symbolism, pricing, and more in our Willemite Gemstone Guide.

Willemite occurs as a primary and secondary mineral in metamorphosed zinc ore deposits. It is uncommon, except at the zinc mines of Franklin and Ogdensburg in Sussex County, New Jersey, where it is one of the three primary ore minerals.

Willemite, white or greenish yellow silicate mineral, zinc silicate, Zn2SiO4, that is found as crystals, grains, or fibres with other zinc ores in many deposits. Included are various localities in Sussex County, New Jersey, where it occurs in crystalline …

Though usually unassuming in plain light, willemite is well known for its distinctive, neon green fluorescence under UV light. It’s one of the main minerals in the famously fluorescent “Christmas rocks” from Franklin, New Jersey.