10045 - Ilmenite basalt
Collection:
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Click the microscope button to view a thin section for this sample.
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Fact sheet

10045 - Ilmenite basalt

Sample 10045 is a fine-grained, vuggy to vesicular, ophitic olivine basalt. It crystallised 3.8 billion years ago and has been exposed at the surface for around 110 million years.

The thin section of this sample predominantly consists of equant ilmenite crystals and laths of plagioclase feldspar enclosed by pyroxene. Olivine is a minor constituent (3%), that is often enclosed by pyroxene. Chromite, cristobalite, apatite, K-feldspar, troilite and metallic iron are rare but have been reported in this sample. The very rare mineral species armalcolite, named after the three astronauts who were involved in its transfer to Earth, is also present in 10045, but its very difficult to see. It is reported as an exsolution product within ilmenite grains.

Further details of this and other Apollo samples are here: http://curator.jsc.nasa.gov/lunar/

About this collection

The Apollo 11 samples create an iconic collection since they were the first rocks collected by humankind that were returned to Earth from another solar system body. The Apollo 11 team collected and returned 22 kg of rock and soil samples.

Apollo 11 launched from Cape Kennedy on 16 July 1969. An estimated 530 million people watched Armstrong's televised image and heard his voice describe the event as he took "...one small step for a man, one giant leap for mankind" on 20 July 1969.

Sample details

Collection: Apollo 11
Type
igneous
Rock-forming mineral
feldspar
pyroxene
olivine
ilmenite
Accessory minerals
apatite
troilite
chromite
cristobalite
metallic iron
armalcolite
Category guide  
Category Guide
Title
Refers to any word or phrase that appears in the individual rock names. Names are generally descriptive; they allow users to search for broad terms like ‘granite’ as well as more specific names such as ‘breccia’. However, the adjacent descriptions of the specimens captures a wider range of general words and phrases and is a more powerful search tool.
Description
Refers to any word or phrase that appears anywhere in the descriptions of the specimens
Accessory minerals
Minerals that occur in very low abundance in a rock. They are usually not visible with the naked eye and contribute perhapssver, they often dominate the rare elements such as platinum group metals.
Rock-forming minerals
Minerals that make up the bulk of all rock samples and are also the ones used in rock classi?cation.
Timescale
Selecting one or more period, for example 'Jurassic'.
Theme
A term used to group together related samples that are not already gathered into a single Collection. For instance, there is a ‘SW England granites’ theme that includes such rock types as granite, hydrothermal breccia, skarn and vein samples.
Category
A general term used to label a rock sample. It is a useful way of grouping similar samples throughout a collection. Category names are often, but not exclusively, common rock names (e.g. granite, basalt, dolerite, gabbro, greisen, skarn, gneiss, amphibolite, limestone, sandstone).
Owner
The owner of the sample that appears in the collection. For example, NASA owns all the samples that appear in the Moon Rocks collection
We would like to thank the following for the use of this sample: