2" Natural Gabbro Polished Palm Stone Mineral Calcium Plagioclase Madagascar

Location: Madagascar

Weight: 2.1 Ounces 

Dimensions: 2 Inches Long, 1.5 Inches Wide, 0.8 Inches Thick

The item pictured is the one you will receive. 

Gabbro 
Gabbro is a coarse-grained, dark-colored intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma deep within the Earth’s crust. While its mineral composition is similar to basalt, gabbro has a much coarser texture due to its slow cooling, whereas basalt cools rapidly and is fine-grained.

Mineral Composition
The primary minerals in gabbro include:

• Plagioclase Feldspar: Typically calcium-rich, often in the form of labradorite or bytownite, forming a major component of gabbro.

• Pyroxene: Most commonly clinopyroxene, usually augite. Orthopyroxene may also occur in specific gabbro varieties.

• Olivine: Present in some types, especially olivine gabbros.

• Accessory Minerals: Minor amounts of hornblende (in hornblende gabbros), biotite, magnetite, ilmenite, and apatite may be present.

• Quartz and Feldspathoids: Certain subtypes, like quartz gabbros or foid-bearing gabbros, contain small amounts of quartz or feldspathoids.