I examined the sample with the perovskite skeleton crystals from the photo of the day from Nov. 17, 2023 (Photo ID: 1255606) with EDX (see discussion at Mindat).

I took a sample of the powdery, brownish, curved material directly under the perovskite skeleton. I took a 2nd sample from a light brown, long prismatic crystal stalk with a round cross-section in the immediate vicinity of the perovskite.

At the point directly below the perovskite, I found some fluorapatite and an unidentifiable Mg-Al silicate.

The brownish crystal has the same chemical composition (Mg-Al-silicate).

Analysis data are available!

I found palygorskite as the only mineral with the ratio of Mg:Al:Si of 2:1:4 that I measured.

Due to the powdery morphology, however, I rather suspect that the brownish, powdery material is not palygorskite, but an X-ray amorphous weathering product.

Unfortunately, however, there is not enough preparable material for a P- or S-XRD.

Remark:

Interestingly, I have found an identical chemical composition with Mg:Al:Si of 2:1:4 in earlier EDX analyses of light brown, lathy tabular but X-ray amorphous crystal formations from the Rother Kopf.