Which icons to use for "open" and "show in explorer/finder"?

I am writing a desktop application that shows a list of projects. Each row of the list represents a project that can be opened by clicking on an icon (Icon A).

After the project is opened, the user can also click on another icon (Icon B) to open the directory of the project in the Finder/Explorer.

My problem is, I don't know which icons I am suppposed to use for Icon A, and Icon B. The first opens the project, the latter reveals it in the Explorer/Finder.

Currently I use a simple "Folder" icon for both, but if it looks the same, it should do the same, which it currently doesn't.

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I am using the Iconify icon set linked here. Can anyone enlighten me what the UX standard would be here?

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