Linda Grashoff's Photography Adventures

Iron Oxide

Iridescence along the River 6

August 5, 2018

Iron Bacteria in Florida 2

February 19, 2018

Taken on the same day as the photograph of the previous post, these photos show Leptothrix discophora and its precipitated iron oxide at Jelks Preserve.


Birth of an Obsession

July 7, 2017

Kendal at Oberlin publishes a literary magazine, called Eureka!, three times a year. All the artwork and writing is by residents of this retirement community. I’m lucky enough to live at Kendal at Oberlin, and to have had an article with photographs published in the latest issue. The piece reveals the origins of my fascination with the iron bacteria. Since many of you have seen on this blog my photographs of the iridescent film that Leptothrix discophora creates on the surface of water, I thought some of you might be interested in reading about how my engagement started. Just click on the link below to find out. And please forgive my crude post-production edit on the next to the last page. I thought it made the story easier to understand. Below the link to the article is a photo of Leptothrix discophora film that I took last month at Schoepfle Garden.

Birth of an Obsession in Eureka!, Spring 2017

Had to Get Myself Back to the Garden 6

July 23, 2016

I didn’t stay very long at Schoepfle Garden when I went there last Sunday, so Tuesday I went back. Checking more of the places I usually find Leptothrix discophora on the garden side of the river, I still didn’t find much. I found several patches of iron-stained rocks and leaves that indicated L. discophora had been there, but where the film was absent.

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In Mr. Schoepfle’s Garden, April 2016—4

May 11, 2016

I don’t think I’ve ever seen a patch of shale riverbank look as colorful as this one did April 17.

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Downriver Walk 2015—More Leptothrix discophora

November 1, 2015

I saw more manifestations of Leptothrix discophora September 18 than I showed last week. Here are five more views of it. The sixth photograph shows the iron-oxide precipitate of another oxidizing iron bacterium or bacteria and a lighter precipitate of a different mineral, perhaps aluminite, which has made its appearance in the Vermilion River riverbed on other occasions. To quote from my book, “Aluminite hasn’t been studied in the Vermilion River, but elsewhere it is known to form around fungal and bacterial masses.”

The talk I gave about my book to the Friends of the Oberlin College Library October 27 was recorded, and the video is now online.

09182015 Schoepfle Garden-266-Edit


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09182015 Schoepfle Garden-129-Edit


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July Iridescence 5

September 7, 2015

Who needs opals when you can have a Leptothrix discophora film?

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Lorain, Ohio 9

June 19, 201506092015 Lorain Steel Mills-20

Lorain, Ohio 8

June 18, 2015

I can’t be out with the camera and ignore the little details that make abstract compositions, especially if rust might be involved. Here’s one abstract; another tomorrow. Both photos are of the back of the building shown in the third photo on June 12‘s post.

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Featured in Oberlin Alumni Magazine

May 18, 2015

I’m happy to report that the spring 2015 issue of the Oberlin College alumni magazine has included mention of my book, They Breathe Iron, along with two photos from the book. Something seems to have happened to the color of the photos in the online version of the magazine, so I’ll show you how the images should look: