Granofels is a term referring to medium- to coarse-grained metamorphic rocks which have a granoblastic texture (having poorly formed, equi-granular crystal grains visible to the naked eye) and lack distinct foliation or lineation. [1]

The term granofels is proposed for medium- to coarse-grained, granoblastic, metamorphic rocks without, or with only indistinct, foliation or lineation. Existing terms such as granulite, hornfels, leptite gneiss, and leplynite gneiss are unsatisfactory for such rocks.

IUGS definition of granofels: "Metamorphic rock displaying a granofelsic structure, which means that the rock is characterized by the absence of schistosity such that the mineral grains and aggregates of mineral grains are equant (for example quartz, feldspar, garnet and pyroxene), or if inequant have a random orientation."

If the mineral grains are visible and all about the same size, we describe the rocks as granoblastic, and we call the rocks granofels. In the most well-formed granofels, mineral grains are equant instead of euhedral, and mineral grains intersect at triple junctions with grain boundaries creating 120 o angles that we can see in thin section.

Defined by Robertson (1999) as a granular fine- to coarse-grained granoblastic metamorphic rock with little or no foliation or lineation, usually formed by contact metamorphism.

Granofels isa name for a massive granoblastic metamorphic rock, consisting of equant grains of quartz and feldspar, hence lacking a foliation. The term Granofels was introduced by Goldsmith (1959) as a term to describe rocks in which schistosity was absent or virtually absent.

Jan 10, 2018 · Granofels is an isotropic, fine-grained granoblastic metamorphic rock (Figs. 2E–2G) consisting of K-feldspar (10–30 vol%), plagioclase (20–30 vol%), quartz (30–40 vol%), muscovite (10–15 vol%), minor biotite, and garnet (1–5 vol%); it can contain kyanite.

Granofels - a medium- to coarse-grained granoblastic rock without, or with only indistinct, foliation or lineation. Cataclastic Rocks Mylonite - a foliated, medium- to fine-grained to flinty or glassy and streaky looking rock. Eyes or relict lenses of the parent rock …

granofels A little-used name for a massive granoblastic metamorphic rock, consisting of equant grains of quartz and feldspar, hence lacking a foliation. Minor mafic minerals consist of pyroxene and garnet.

Apr 7, 2025 · "granofels" published on by null. A little-used name for a massive granoblastic metamorphic rock, consisting of equant grains of quartz and feldspar, hence lacking a foliation. Minor mafic minerals consist of pyroxene and garnet.