Lherzolitic Shergottites – Martian Meteorites

A Rare Subgroup of Shergottites

Lherzolitic shergottites represent one of the less common subtypes within the broader shergottite group. Their composition and texture distinguish them clearly from basaltic and olivine-phyric varieties.

They are named after lherzolite, a type of ultramafic rock rich in olivine and pyroxene, commonly associated with planetary mantles.

Composition and Mineralogy

These meteorites are dominated by a mixture of olivine and pyroxene, often with coarse-grained textures that reflect slower cooling processes compared to typical volcanic shergottites.

Their mineral assemblage provides key information about:

• The composition of the Martian mantle
• The processes of partial melting
• The evolution of Martian magmas

Formation at Depth

Lherzolitic shergottites are believed to have formed from magmas originating deeper within Mars, possibly sampling mantle-derived material. Their textures suggest crystallization under conditions distinct from surface lava flows.

This gives them a unique position among Martian meteorites, bridging the gap between mantle processes and volcanic activity.

A Complement to Other Shergottites

While basaltic and olivine-phyric shergottites reflect volcanic processes near the surface, lherzolitic shergottites provide insight into deeper geological environments.

Together, these subgroups contribute to a more complete understanding of Martian internal structure and magmatic diversity.

Scientific Importance

Lherzolitic shergottites are of particular interest in planetary science because they help constrain models of:

• Martian mantle composition
• Partial melting processes
• Crust-mantle interactions

They are less abundant than other shergottites, making each specimen especially valuable for research.

Collector Interest

Due to their rarity and scientific significance, lherzolitic shergottites are highly sought after by advanced collectors. Their coarse textures and mineralogical composition give them a distinct identity within Martian meteorites.

They represent a more specialized segment of Martian collecting, often appreciated by those seeking diversity within shergottite types.

Available Specimens

The specimens presented in this category include selected lherzolitic shergottites, offering access to this rare and scientifically important group of Martian meteorites.

FAQ

What are lherzolitic shergottites?

They are a rare subtype of Martian meteorites rich in olivine and pyroxene, reflecting deeper geological origins.

Why are they important?

They provide insights into the Martian mantle and the processes of magma formation.

Are lherzolitic shergottites rare?

Yes, they are less common than other types of shergottites.

What minerals do they contain?

They are mainly composed of olivine and pyroxene.

How are they different from other shergottites?

They reflect deeper formation conditions and have a distinct mineralogical composition compared to basaltic and olivine-phyric shergottites.