Marble Bar Meteorite Impact Spherule Bed [43 gm ~ 3.47 Ga]

Marble Bar: Explore Earth’s Meteorite Impact History

This rare geological specimen is a remnant of the late heavy bombardment (LHB), a period marked by intense meteorite and asteroid impacts. Uncover the secrets of the Archean era with this Marble Bar impact spherule ejecta from the Pilbara Craton, Western Australia.

Key Features

• Silicified Impact Spherules
• Contains Fe-rich rims primarily composed of secondary siderite, with high nickel (Ni) abundances and Ni/Cr ratios.
• Represents hypervelocity impacts that shaped the Pilbara Craton, evidenced by spherule beds with microtektites, microkrystite spherules, iridium anomalies, and nickel-rich minerals.
• Associated with unconformities, banded iron formations, major faulting, erosion, and depositional features.

Specifications

• Size: 57mm L x 48mm W x 7mm D
• Weight: 43.3 grams
• Age: ~3.47 billion years (Duffer Formation, Marble Bar Chert Member)

Contents

• Impact spherules intermixed with chert fragments and iron-rich spherules with secondary siderite.
• High nickel abundance in spherule rims.
• Matrix primarily composed of arenite with spherule lenses within bedded chert.
• Evidence of fragmentation and tsunami action, with iridium levels at two ppb.

Included with Purchase

• Tag and tag stand
• Information about the specimen
• Certificate of Authenticity

Note: Plexiglass bases and photo cube are not included.

Makes a Terrific Addition to Impact Collections!

This Marble Bar impact spherule ejecta is a fascinating addition to any geological collection, offering a tangible connection to our planet’s distant cosmic past.

This scientific material is Guaranteed Authentic. It was professionally and legally collected and arrives with a Certificate of Authenticity and information about Marble Bar, Pilbara Craton, Western Australia.