BM25 单路（属性文字）

epidote

actinolite

augite

aegirine

pollucite

albite

prehnite

andalusite

none of the listed minerals match all the criteria

andradite

quartz

beryl

creedite

calcite

apatite

cancrinite

epidote

diopside

calcite

dolomite

none of the listed minerals match all the given properties (trigonal crystal system, hardness 7.5, white streak, green color, vitreous to oily luster, transparent, SG ~2.9). However, the question requires choosing from the provided list, and among them, **amazonite** is a green variety of microcline (triclinic), not trigonal — but wait: amazonite is triclinic, not trigonal. Let’s re-check key constraints: - Trigonal crystal system - Mohs hardness 7.5 - White streak - Green color - Vitreous to oily luster - Transparent - SG ≈ 2.9 Common trigonal minerals: quartz (hardness 7, SG 2.65, usually not green — except prasiolite, but that’s not on list), beryl (hexagonal, not trigonal — though sometimes confused; beryl is hexagonal, *not* trigonal), apatite (hexagonal), calcite (trigonal, but hardness 3, not 7.5), corundum (trigonal, hardness 9, SG 4.0), tourmaline (trigonal, hardness 7–7.5, SG 2.8–3.3, commonly green, white streak, vitreous luster, transparent — yes!). Tourmaline fits: - Crystal system: trigonal - Mohs hardness: 7–7.5 - Streak: white - Color: green (e.g., chrome tourmaline, verdelite) - Luster: vitreous (sometimes described as slightly resinous/oily) - Diaphaneity: transparent to translucent - Specific gravity: 2.8–3.3 → ~2.9 fits And **tourmaline** is in the list. Yes — tourmaline matches all criteria. answer: tourmaline

elbaite

pollucite

grossular

epidote

hedenbergite

amazonite

kyanite

albite

microcline

prehnite

natrolite

cinnabar

rutile

creedite

siderite

none of the listed minerals match the given properties exactly. however, based on the provided list and constraints, no mineral in the list has monoclinic crystal system *and* hardness 6.5–7.0 *and* white streak *and* colorless *and* vitreous luster *and* transparent *and* sg ~3.1. but wait — rechecking the list: **epidote** is monoclinic, hardness 6–7, white streak, color commonly green but also colorless or pale, vitreous luster, transparent to translucent, sg 3.4–3.5 — close but sg higher. **titanite (sphene)**: monoclinic, hardness 5–5.5 — too soft. **orthoclase**: monoclinic? No — it's monoclinic *only* in its low-temperature form (sanidine is triclinic, orthoclase is monoclinic? Actually, orthoclase is monoclinic — yes, standard orthoclase is monoclinic. Hardness 6–6.5, streak white, colorless to pink/white, vitreous, transparent, sg ~2.5–2.6 — too low. **albite**: triclinic, not monoclinic. **amazonite**: variety of microcline (triclinic), not monoclinic. Wait — **jadeite** isn’t listed. **Spodumene**: monoclinic, hardness 6.5–7, white streak, colorless varieties exist (e.g., hiddenite less common, but triphane is colorless), vitreous, transparent, sg ~3.1–3.2 — yes! But spodumene *is* in the list. Check spodumene: - crystal system: monoclinic ✅ - Mohs hardness: 6.5–7 ✅ - streak: white ✅ - color: colorless (triaphane variety) ✅ - luster: vitreous ✅ - diaphaneity: transparent ✅ - specific gravity: 3.1–3.2 ✅ And **spodumene** is in the provided list. So answer is: spodumene

spodumene

creedite

titanite

creedite

tremolite

scheelite

zircon