Specimen #645

Name: Glauconite and Calcite

Type: Micromount

Locality: St. Marie Quarry, Green Lake County, Wisconsin, USA

Favorite? N

Fluorescent? N

Size:

Weight:

Acquired: 2008-05-01

Source: Simkev Micromounts

Label: N

Comment: "Unusual pieces! Concretions of colourless to grey-green individual rice grain Calcite crystals. The green coloration is due to inclusions of "Glauconite" which is also part of the "cement" holding the pieces together.

Minerals: Calcite (CaCO₃) Glauconite ((K,Na)(Fe⁺⁺⁺,Al,Mg)₂(Si,Al)₄O₁₀(OH)₂)

There is one picture on file

M00645-01.jpg:

Field of View: 9.2 x 6.2 mm