Erythrite Crystal Morocco Cobalt Mineral Specimen Vibrant Pink

Erythrite – Natural Cobalt Mineral Specimen from Morocco

This Erythrite specimen from Morocco is a genuine natural mineral example, selected for its striking colour and distinctive crystal habit. Full sizing please see photo, and the photograph provided shows the actual specimen you will receive. Each piece includes a Certificate of Authenticity lifetime guarantee generic card, confirming it as a genuine mineral specimen.

Mineral Species & Chemical Composition

Erythrite is a hydrated cobalt arsenate mineral with the chemical formula:

Co₃(AsO₄)₂·8H₂O

It belongs to the arsenate mineral group and crystallises in the monoclinic crystal system. Erythrite is well known for its vivid pink to crimson colour, which results from the presence of cobalt within its structure.

The mineral typically forms:

• Slender prismatic crystals

• Radiating crystal sprays

• Fibrous or acicular aggregates

• Botryoidal crusts in some occurrences

Erythrite has a relatively low hardness of 1.5–2.5 on the Mohs scale, making specimens best suited for careful handling and display in mineral cabinets.

Colour, Lustre & Crystal Characteristics

Erythrite is often referred to as “cobalt bloom” due to its intense pink to magenta colouration. This specimen may display:

• Bright pink, rose, or crimson tones

• Silky to vitreous lustre

• Delicate radiating crystal formations

• Fine fibrous or needle-like structures

• Strong visual contrast against matrix rock

The colour intensity can vary depending on crystal thickness and light exposure. Over time, some erythrite specimens may show subtle surface changes due to environmental conditions, which is characteristic of hydrated arsenate minerals.

Each piece is naturally unique in crystal arrangement and matrix composition, reflecting the geological conditions under which it formed.

Geological Formation & Moroccan Locality

Morocco is internationally recognised for producing high-quality mineral specimens, including cobalt-bearing arsenates such as erythrite. These minerals typically form in the oxidation zones of cobalt-rich ore deposits.

Erythrite develops when primary cobalt minerals undergo weathering and chemical alteration near the Earth’s surface. In these oxidised environments, cobalt reacts with arsenic-bearing solutions to crystallise erythrite along fractures and cavities within host rock.

Common associated minerals in Moroccan deposits may include cobaltite, skutterudite, quartz, calcite, and other secondary arsenates. The presence of matrix adds geological context and enhances the specimen’s authenticity.

Authenticity, Presentation & Collector Appeal

• Mineral: Erythrite

• Chemical Formula: Co₃(AsO₄)₂·8H₂O

• Crystal System: Monoclinic

• Origin: Morocco

• Authenticity: Includes Certificate of Authenticity lifetime guarantee generic card

• Sizing: Full sizing please see photo

This specimen is ideal for mineral collectors, cobalt mineral enthusiasts, educational geology collections, or as a visually striking display piece. Its vivid colour and delicate crystal habit make it a standout addition to any curated mineral cabinet.

Collecting & Traditional Associations

Erythrite is highly sought after among collectors due to its vibrant colour and its role as an indicator mineral for cobalt deposits. Its distinctive appearance makes it instantly recognisable within arsenate mineral groups.

In spiritual traditions, erythrite is sometimes traditionally associated with vitality and transformation; these interpretations are cultural rather than scientific. From a mineralogical perspective, its true significance lies in its cobalt content, oxidation-zone formation, and vivid crystal colour.

A genuine Moroccan Erythrite specimen, carefully chosen for quality and supplied with certificate of authenticity, offering exceptional natural colour and mineralogical interest.