Goethite “Wood Iron” | Restormel Royal Iron Mine, Cornwall | No. 2

Goethite "Wood Iron" – Restormel Royal Iron Mine, Cornwall

A fascinating 445g specimen of Goethite, traditionally known as "Wood Iron", originating from the historic Restormel Royal Iron Mine near Lostwithiel, Cornwall.

Wood Iron is a distinctive variety of goethite recognised for its fibrous, layered and sometimes wood-like mineral textures. This traditional name reflects the remarkable structures produced during the natural formation of iron-rich mineral deposits.

Originating from one of Cornwall's historically important iron mines, this specimen offers a wonderful connection between natural mineral formation and the county's extraordinary mining heritage.

Specimen Description

An exceptional natural Goethite “Wood Iron” specimen from the historic Restormel Royal Iron Mine near Lostwithiel, Cornwall, showcasing a fascinating combination of fibrous mineral growth, rounded botryoidal formations and striking iron-rich colouration.

This substantial 445g specimen displays a complex arrangement of dark charcoal-grey and brown goethite, with beautifully defined radiating structures that resemble the grain of wood. These intricate formations are particularly noticeable across the exposed surfaces, where tightly packed fibres create distinctive fan-shaped and concentric patterns.

Scattered throughout the specimen are rounded, botryoidal goethite formations, adding depth and contrast to the more structured, fibrous mineral growth.

Vivid golden-yellow and rusty-orange iron-rich deposits occupy the natural crevices and exposed surfaces, creating a striking contrast against the darker mineral formations. These ochre-coloured areas are characteristic of iron mineral weathering and alteration.

One particularly attractive feature is the presence of natural cavities and openings, revealing additional mineral structures beneath the surface. A pale, crystalline quartz-rich area is also visible within one of these openings, contrasting beautifully with the surrounding dark goethite.

The specimen's natural formation provides an excellent opportunity to examine several different iron mineral textures within a single piece, from smooth, rounded surfaces to radiating fibres and compact layered growth.

Originating from one of Cornwall's historically significant iron mines, this specimen is an appealing addition to any collection of British minerals, Cornish mining specimens or unusual geological formations.

About Goethite & Wood Iron

Goethite (FeO(OH)) is an iron oxyhydroxide mineral and an important constituent of many iron ore deposits.

It belongs to the orthorhombic crystal system and has a Mohs hardness of approximately 5–5.5.

Goethite commonly develops through the oxidation and alteration of iron-bearing minerals, particularly in environments where oxygenated water interacts with existing iron deposits.

The mineral can form in several distinctive habits, including:

• Fibrous and radiating crystal aggregates
• Concentric and banded formations
• Botryoidal or rounded mineral surfaces
• Compact, earthy and massive deposits
• Layered structures historically described as Wood Iron

Wood Iron is a traditional descriptive term rather than a separate mineral species. It refers to goethite formations whose fibrous or layered structures resemble wood.

Unlike petrified wood, Wood Iron does not necessarily contain any original organic material. Its wood-like appearance can arise entirely from mineral growth.

Historic mineral collections frequently preserve these traditional names because they provide valuable insight into the terminology used by early mineralogists and collectors.

Mine History & Cornish Heritage

Restormel Royal Iron Mine is situated near Lostwithiel, Cornwall, close to the historic Restormel Castle.

Unlike the numerous Cornish mines principally associated with tin and copper extraction, Restormel Royal became particularly well known for its iron ore deposits and distinctive iron mineral specimens.

The locality was historically known as Trinity Mine, with mineral collecting recorded during the late eighteenth century. The celebrated Cornish mineral collector Philip Rashleigh obtained specimens from the area during the 1790s.

The mine developed around an extensive iron-bearing lode, with a large opencast excavation traditionally known as a gunnis. Underground workings were subsequently developed beneath the earlier excavations.

One of the mine's most remarkable historical events occurred in September 1846, when Queen Victoria and Prince Albert visited the workings.

During their visit, the royal couple travelled underground in a mine truck drawn by miners to inspect the iron ore deposits. The association with this royal visit contributed to the mine becoming known as Restormel Royal Iron Mine.

The mine continued operating during the nineteenth century, eventually closing in 1883.

Restormel Royal is particularly significant to mineral collectors because of its iron mineralisation, including goethite, hematite and associated quartz.

Historic specimens from the mine demonstrate the varied textures that iron minerals can develop, from fibrous and layered formations to dense, compact and botryoidal masses.

The Royal Cornwall Museum preserves mineral specimens associated with the locality, helping document the relationship between Cornwall's mining industry, early mineral collecting and scientific study.

Wood Iron specimens are especially evocative of this heritage, retaining a traditional mineral name that reflects how early collectors described the unusual textures found within Cornwall's iron deposits.

Intention & Associated Chakras

Within traditional crystal healing practices, Goethite is associated with grounding, resilience and emotional stability.

• Grounding: Traditionally associated with maintaining a sense of stability and connection to the physical world.
• Protection: Symbolically connected with strength, personal boundaries and security.
• Emotional Reflection: Associated with patience, introspection and processing difficult experiences.
• Resilience: Traditionally linked with perseverance and inner strength.

Associated Chakra: Root Chakra.

Intentions: Protection and Calm.

These associations are based on spiritual traditions and are not scientifically established properties of the mineral.

Natural Formation & Symbolism

As a naturally formed raw specimen, this piece represents the gradual geological processes responsible for the formation and alteration of iron-bearing minerals.

The distinctive layered structure associated with Wood Iron is often symbolically connected with endurance, accumulated experience and the passage of time.

Its natural, unpolished character makes it particularly appealing to collectors who appreciate minerals in their original geological form.

Specimen Details

• Mineral: Goethite
• Traditional Variety: Wood Iron
• Chemical Formula: FeO(OH)
• Mineral Class: Oxides and Hydroxides
• Crystal System: Orthorhombic
• Mohs Hardness: 5–5.5
• Mine: Restormel Royal Iron Mine
• Historical Mine Name: Trinity Mine
• Locality: Lostwithiel, Cornwall, England
• Weight: 445g
• Measurements: 50.5mm × 85.8mm
• Formation: Natural raw mineral specimen
• Quantity: One individual specimen

You will receive the individual specimen photographed. Natural mineral specimens may contain irregular edges, fractures, weathered surfaces and variations associated with their geological formation.

Sources & References

The following resources provide further information about Restormel Royal Iron Mine, its historical importance and the mineralogy of goethite:

1. Mindat – Restormel Royal Iron Mine (Trinity Mine). Mineral locality records and documented mineral occurrences.
2. Virtual Microscope – Goethite, Royal Cornwall Museum Collection. Historical Cornish mineral specimen and information relating to Restormel Royal Iron Mine.
3. MineArchive – Restormel Royal Iron Mine. Historical overview of the mine and its workings.
4. Mindat – Goethite. Mineralogical information, chemical composition, crystal structure and physical characteristics.

Historical references describe the documented mine locality rather than the extraction history of this individual specimen. Its provenance is based on supplied collection information. Mineral identification has not been independently laboratory verified.