Lot # 95 - Native Sulphur Mineral Specimen

Opening Bid : $ 5.00
Pickup Instructions: jan 25 10am
Start Date/Time: 02-Mar-2026 7:00:00 AM
End Date/Time: 09-Mar-2026 8:34:00 PM
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Description :

What Sulfur Is

  • Chemical element: S (atomic number 16)

  • Mineral class: Native element

  • Typical color: Bright lemon‑yellow to deep ochre

  • Luster: Resinous to greasy

  • Hardness: 1.5–2.5 on Mohs — very soft

  • Streak: White

  • Fracture: Conchoidal to uneven

Your piece shows that characteristic rich yellow, with some earthy gray and brown matrix, which is extremely common for sulfur that forms in volcanic or hydrothermal environments.

How It Forms

Sulfur usually crystallizes in:

  • Volcanic fumaroles — where hot gases deposit sulfur as they cool

  • Hydrothermal systems — often alongside gypsum, calcite, aragonite, or realgar

  • Evaporite deposits — where sulfate minerals break down and release elemental sulfur

The rough, knobby texture in your specimen suggests massive sulfur, not well‑formed crystals. This is typical of sulfur that condensed from volcanic gases rather than growing slowly in open cavities.

What Makes Your Specimen Interesting

Based on the image, your piece has:

  • A natural, unpolished surface showing sulfur’s brittle, crumbly habit

  • Color zoning from bright yellow to muted ochre, likely due to minor impurities or oxidation

  • Attached matrix that hints at its geological setting — possibly volcanic tuff or hydrothermal sediment

Collectors often appreciate sulfur for its pure elemental nature, its vivid color, and its role in illustrating geochemical cycles.

Care & Display Tips

Sulfur is a bit delicate:

  • Avoid heat — it melts at low temperatures

  • Avoid direct sunlight — can dull the color over time

  • Avoid moisture — it can slowly oxidize

  • Keep away from metals — sulfur can tarnish them


Disclaimer: All identifications are based solely on visual examination of the photographs provided. I do my best to describe each specimen accurately, but I am not a certified geologist, and some assessments may be incorrect. Buyers should review the images carefully and verify details independently.
Dimensions : 7 in L x 4 in H

Auction History

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