Ramsbeckite is a rare copper-zinc sulfate mineral typically found as small, bright green tabular crystals or crusts. It primarily forms in the oxidized zones of base metal deposits, often associated with other secondary copper minerals.

Hardness

Mohs

Luster

Vitreous

Streak

Light Green

Transparency

Translucent

mineralrare

Ramsbeckite

Hardness: 3
Luster: Vitreous
Streak: Light Green
Transparency: Translucent

Is this ramsbeckite?

5-step field check

Run through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.

1
Test the hardness
Try to scratch ramsbeckite with a known reference. Ramsbeckite sits at Mohs 3 — softer than the next harder reference, harder than the previous one.
2
Check the streak
Drag the specimen across an unglazed porcelain plate. Ramsbeckite leaves a light green streak.
3
Read the luster
Hold the specimen under a strong light. Ramsbeckite typically shows a vitreous luster.
4
Match the color range
Compare against the expected color range: bright green, dark green.
5
Look at form & habit
Crystal system: monoclinic. Typical habit: tabular crystals, radiating aggregates, crusts.

Often confused with

Ramsbeckite vs. its common look-alikes — and how to tell them apart in the field.

mineral

Brochantite

Mohs 3.5-4

How to tell apart: Streak differs — Ramsbeckite leaves light green, Brochantite leaves pale-green.

How to tell apart: Streak differs — Ramsbeckite leaves light green, Devilline leaves pale blue.

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Often found alongside ramsbeckite

Minerals reported to co-occur with ramsbeckite. Spotting these in float or country rock is a strong cue you are in the right ground.

All properties

Chemical formula: (Cu,Zn)₁₅(SO₄)₄(OH)₂₂·6H₂O
Mohs hardness: 3
Density: 3.51 g/cm³
Colors: Bright Green Dark Green
Streak: Light Green
Luster: Vitreous
Transparency: Translucent
Crystal system: Monoclinic
Crystal habit: Tabular Crystals, Radiating Aggregates, Crusts
Cleavage: Perfect On {001}
Rarity: Rare
Uses: Collector
Host rock: Oxidized Zones of Copper-zinc Sulfide Deposits
Typical price: $20-200 depending on specimen size and quality

Where rockhounds find ramsbeckite

Classic worldwide localities

Ramsbeck, Germany
Laurion, Greece
Broken Hill, Australia
Tsumeb, Namibia

Field-hunting tip

Look in oxidized zones of copper-zinc sulfide deposits country — that is the host setting where ramsbeckite typically forms. If you start seeing sphalerite, galena, linarite in float, you are in the right ground. Field specimens usually show a tabular crystals, radiating aggregates, crusts habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify ramsbeckite?+

Mohs hardness is 3. It typically shows a vitreous luster. The streak is light green. Common colors include bright green, dark green.

Where is ramsbeckite found?+

Notable localities include Ramsbeck, Germany; Laurion, Greece; Broken Hill, Australia; Tsumeb, Namibia.

How much is ramsbeckite worth?+

Typical asking prices fall in the range of $20-200 depending on specimen size and quality. Quality, size, and provenance can move individual specimens well outside that range.

Is ramsbeckite safe to handle?+

It contains toxic constituents. Contains copper and zinc; avoid inhaling dust or ingesting particles and wash hands thoroughly after handling. Handle with care, avoid grinding or breathing dust, and store separately.

What rocks look like ramsbeckite?+

Ramsbeckite is most often confused with Brochantite, Antlerite, Devilline. A quick hardness test and a streak check separate the look-alikes faster than color alone.

What minerals are found with ramsbeckite?+

Ramsbeckite commonly co-occurs with Sphalerite, Galena, Linarite, Malachite, Cerussite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does ramsbeckite form in?+

Ramsbeckite typically forms in oxidized zones of copper-zinc sulfide deposits. Working float back to the host body is the standard way to chase a fresh occurrence.

What is ramsbeckite used for?+

Ramsbeckite is used in collector.

Find ramsbeckite on the map

RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.